## An element with mass 670 grams decays by 21.8% per minute. How much of the element is remaining after 15 minutes, to the nearest 10th of a g

Question

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## Answers ( )

Answer:Step-by-step explanation:In this problem we have a exponential function of the form

where

x is the time in minutes

y is the mass of the element in grams

a is the initial value or y-intercept

b is the base

r is the rate

b=(1+r)

we have

substitute

so

For x=15 min

substitute in the exponential equation

Answer: 16.8

im doing the delta math