Suppose 128 oz of radioactive substance decays to 28 oz in 6 hours, what is the half-life of the substance?

Suppose 128 oz of radioactive substance decays to 28 oz in 6 hours, what is the half-life of the substance?

Determine an exponential function in the form y=Cbx given two points (0,-2) and (1,-6) the answer is y= -2(3x) but I do not know how that was reached thank you in ad...

The 2-X is in the exponent

mabel has 8000 in a bank which is below her required remaining balance. As penalty, her money decreases at the rate of 10% every month. How much money will she have after one year?

solve the exponential equation 10-x = 56x

ex+e-x=6

Exact Answer Approximate Answer show work

I was teaching a class and came across a question related to quadratic equations. Question was about reducing given exponential equation to quadratic form and solve by factorization later. I would...

A savings account earns 2% annual interest, compounded annually. The variable y gives the amount of money in the account after x years. Find the base, b, for the exponential equation of the form...

The population of a town decreased by 2.5% each year. The variable y gives the population after x years. Find the base, b, for the exponential equation of the form y=a x b^x that describes the...

Slove the exponential equation equation.Check for extraneous solutions. Round the result to three decimal places if necessary. 1.) 92x=3^2x+4 10.) 3ex =2 19.)92x=32x+4

8^x=4 and 9^-2x= (27) ^x-1

A) There is am estimated 2000 deer currently in China. The population is estimated to decrease by 8% every year due to the construction of homes in the area. At this rate how many deer will there...

help me

(1/4)-2x=64

Both need to be rounded to the nearest ten thousandths. 1. 4x=243 2. 14^x+1=36?I have do this problem too many times but only answers I have gotten is 1.347 or 0.358

Basically, I have this equation... 60 = 400(0.85)x ...And I need to solve for 'x'. So far, what I'm thinking is that I need to divide both sides by 400, but I haven't...

8^3x^+5 = (1/4)^x^-2 (e^x)^2 = e^4x e^6

1252x * 25x2-3 = ( √5)x *The exponent of 25 is x squared btw.

Solve Equations Without Using A Calculator And Show Work 1) ln(x-1) - ln(x-3) = 1 2) 3^x(5^(x-2)) = 3^(4x) I need to turn it in by tomorrow...

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