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?

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) 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...

ex+e-x=6

Exact Answer Approximate Answer show work

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...

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

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

help me

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

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

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...

a) On January 1 2000, the park estimated that they had 500 deer on their land. Two years later, they estimated that there were 550 deer on the land. Assume that the number of deer was changing exponentially,...

formula: A=P(1+r/n)^nt

Hello, I am having some trouble with exponential equations here. 2^1-3x = 5^x+1 The problem I am having with this equation here, is that there is a 3x, which...

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