The exponential function P = 400 x 0.89 gives the amount in parts per million of PCBs in a contaminated sitem 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. OP = 400 x 3.56" OP= 400 x 0.94" P= 400 x 0.22 P = 400 x 0.63" O P = 400 x 0.97" (b) What is the yearly decay factor? (Round your answer to two decimal places.) Find a formula that gives the amount P in parts per million y years after cleanup begins. OP= 400 x 0.99 OP 400 x 0.25 OP 400 x 5.34 OP= 400 × 0.07% OP= 400 x 10.68
The exponential function P = 400 x 0.89 gives the amount in parts per million of PCBs in a contaminated sitem 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. OP = 400 x 3.56" OP= 400 x 0.94" P= 400 x 0.22 P = 400 x 0.63" O P = 400 x 0.97" (b) What is the yearly decay factor? (Round your answer to two decimal places.) Find a formula that gives the amount P in parts per million y years after cleanup begins. OP= 400 x 0.99 OP 400 x 0.25 OP 400 x 5.34 OP= 400 × 0.07% OP= 400 x 10.68
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![The exponential function P = 400 x 0.89 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.
OP 400 x 3.56"
OP= 400 x 0.94"
OP= 400 x 0.22
OP 400 x 0.63"
OP= 400 x 0.97
(b) What is the yearly decay factor? (Round your answer to two decimal places.)
Find a formula that gives the amount Pin parts per million y years after cleanup begins.
OP= 400 x 0.99/
P= 400 x 0.25%
P= 400 x 5.34
OP= 400 x 0.07%
OP= 400 x 10.68](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcf03ac0f-3652-4fe4-83f1-0fd7d3580b95%2F0bc459dd-2eb9-41f0-987e-3ab29bc39f74%2Fhncwabp_processed.png&w=3840&q=75)
Transcribed Image Text:The exponential function P = 400 x 0.89 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.
OP 400 x 3.56"
OP= 400 x 0.94"
OP= 400 x 0.22
OP 400 x 0.63"
OP= 400 x 0.97
(b) What is the yearly decay factor? (Round your answer to two decimal places.)
Find a formula that gives the amount Pin parts per million y years after cleanup begins.
OP= 400 x 0.99/
P= 400 x 0.25%
P= 400 x 5.34
OP= 400 x 0.07%
OP= 400 x 10.68
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