259 Answered Questions for the topic Exponential Functions

Exponential Functions

12/18/18

Explain or demonstrate why the product rule of exponents, b^xb^y=b^x+y, is true for positive integer values of x and y.

Bx by=bx+y
Exponential Functions Algebra 2

12/09/18

exponential functions

An exponential function, in the for f(x)=ab^x, passes through the points (2,5) and (4,180). Find b.
Exponential Functions Math Math Help Calculus 1

09/21/18

exponential equation identification

Find the exponential function f(x)=Ca^x whose graph goes through the points (0,2) and (3,16). a=  C=
Exponential Functions

09/19/18

The radioactive substance cesium-137 has a half-life of 30 years. The amount A(t) in grams of cesium-137 remaining after t years is the following function

A(t)=621(1/2)t/30   Initial grams? After 100 years?
Exponential Functions

09/15/18

Exponential Function?

coolsculpting is a fairly new fat-freezing procedure. One treatment dissolves about 25% of the fat cells in the treated region. a) If a patient starts wih 5 lbs of fat in the treated region, how... more

09/09/18

EXPONENTIAL EQUATIONS & FUNCTIONS

A culture of bacteria doubles in weight approximately every 2.5 hours. The number of bacteria after t hours later can be approximated by 𝑁(𝑡) = 175(2.5)t a) How many bacteria would there be... more
Exponential Functions

08/20/18

Exponential Functions

The population of a city was about 1.78 thousand in the year 2014, with an annual growth rate of about 1.3%. This situation is represented by the growth function P(t)=1.78(1.013)t , where t is the... more
Exponential Functions

08/08/18

If we invest $4,000.00 in an investment account paying 1% interest compounded monthly, how much will the account be worth in 7 years? A(t)=P(1+r/n)nt. The account in 7 years will be worth Exponential Functions 08/08/18 Exponential Functions The population of a city was about 1.78 thousand in the year 2014, with an annual growth rate of about 1.3%. This situation is represented by the growth function... more Exponential Functions 08/08/18 Exponential Functions A 529 Plan is a college-savings plan that allows relatives to invest money to pay for a child's future college tuition; the account grows tax-free. Lily wants to set up a 529 account for her new... more Exponential Functions 08/08/18 Exponential Functions The population of a city was about 1.78 thousand in the year 2014, with an annual growth rate of about 1.3%. This situation is represented by the growth function P(t)=1.78(1.013)t ... more Exponential Functions Math Word Problem College Math 08/08/18 Exponential Functions math word problem A bacteria culture starts with 620620 bacteria and grows at a rate proportional to its size. After 44 hours there will be 24802480 bacteria. 1) Express the population P after t hours as a... more 08/08/18 Exponential Functions help Radon-222 decays at a continuous rate of 17.3% per day. How much will 500 mg of Radon-222 decay to in 10 days? So____?_____ mg of Radon-222 will remain. (Round answer to 5 decimal places) Exponential Functions Word Problem Math Help 08/08/18 math problem Find the time it takes for$6,600 to double when invested at an annual interest rate of 19%, compounded continuously.   _______ years?     Find the time it takes for $660,000 to double when... more Exponential Functions College Math Word Problem Help 08/08/18 Exponential Functions word problem A person invested$3,500 in an account earning a nominal 7% per year compounded continuously. How much was in the account at the end of 5 years?A(t)=Pert   \$_________ please round answer to 2... more
Exponential Functions Math Exponential Decay

08/07/18

Exponential decrease

A medicine is given with a dosage of 30mg, during the first 4 hours 17.7 mg of the drug is broken down. A body generally does this exponentially.   What is the rate of decay? When writing it as a... more
Exponential Functions

08/06/18

When Facebook was founded it had three initial users. At the end of each month the computers determine the number of users by 75%

When Facebook was founded it had three initial users. Now, since so many people use Facebook, they use computers to calculate the total users. At the end of each month, at midnight, the computers... more
Exponential Functions Math Logarithms

08/03/18

Exponential function

K(t) = 50 · 0.65t   with t the time in hours.   For this formula calculate the growth factor per 15 minutes.   And, the forumila K(t) can be rewritten in a form t= A log(K) + B. Do this to... more
Exponential Functions College Math

07/30/18

Exponential Functions

The population of a city was about 1.78 thousand in the year 2014, with an annual growth rate of about 1.3%. This situation is represented by the growth function P(t)=1.78(1.013)t, where t is the... more
Exponential Functions Algebra 1, Exponential Functions

07/30/18

Exponential Function question

Radon-222 decays at a continuous rate of 17.3% per day. How much will 500 mg of Radon-222 decay to in 10 days? So__________________ mg of Radon-222 will remain. Round answer to 5 decimal places.
Exponential Functions

07/30/18

Exponential Functions

A 529 Plan is a college-savings plan that allows relatives to invest money to pay for a child's future college tuition; the account grows tax-free. Lily wants to set up a 529 account for her new... more
Exponential Functions

07/30/18

Exponential Functions

A bacteria culture starts with 1000 bacteria and grows at a rate proportional to its size. After 2 hours there will be 2000 bacteria. (a) Express the population PP after tt hours as a function of t... more
Exponential Functions Math Logarithms

07/28/18

Transforming exponential functions to logarithmic

D(t) = 82.5 · 0.9982t with D the number of inhabitants in millions and t the time in years. t= 0 = the year 2008   The above mentioned equation describing the exponential growth of the number of... more

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