The exponential function P 500 x 0.85m gives the amount in parts per million of PCBS in a contaminated site m months after a cleanup process begins. (a) What is the weekly decay factor? Assume there are four weeks in each month. (Round your answer to two decimal places.) Find a formula that gives the amount P in parts per million w weeks after cleanup begins. P 500 x 0.21" OP 500 x 3.40w P 500 x 0.96 P 500 x 0.52M P 500 x 0.92W (b) What is the yearly decay factor? (Round your answer to two decimal places.) 07 Find a formula that gives the amount P in parts per million y years after cleanup begins. P 500 x O.99Y P =500 x 0.14Y OP 500 x 5.10y OP 500 x 10.20 OP=500 x 0.07Y Need Help? Talk to a Tutor Read It TA e P lype here to search

The exponential function P 500 x 0.85m gives the amount in parts per million of PCBS in a contaminated site m months after a cleanup process begins. (a) What is the weekly decay factor? Assume there are four weeks in each month. (Round your answer to two decimal places.) Find a formula that gives the amount P in parts per million w weeks after cleanup begins. P 500 x 0.21" OP 500 x 3.40w P 500 x 0.96 P 500 x 0.52M P 500 x 0.92W (b) What is the yearly decay factor? (Round your answer to two decimal places.) 07 Find a formula that gives the amount P in parts per million y years after cleanup begins. P 500 x O.99Y P =500 x 0.14Y OP 500 x 5.10y OP 500 x 10.20 OP=500 x 0.07Y Need Help? Talk to a Tutor Read It TA e P lype here to search

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter6: Exponential And Logarithmic Functions

Section6.1: Exponential Functions

Problem 59SE: In an exponential decay function, the base of theexponent is a value between 0 and 1. Thus, for...

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In an exponential decay function, the base of theexponent is a value between 0 and 1. Thus, for somenumber b1, the exponential decay function canbe written as f(x)=a(1b)x. Use this formula, alongwith the fact that b=en, to show that an exponential decay function takes theform f(x)=a(e)nx for somepositive number n.