requestbook
34

Step-by-step Answer
PAGE: 167SET: ExercisesPROBLEM: 34
Please look in your text book for this problem Statement

If an initial quantity grove or decays at an exponential rate or , then the final amount after a time is given by the following formula .

(a)

Find exponential equation for .

Growth rate of inflation between and .

So the time period is .

CPI in was   and was .

Substitute  , and in .

.

Exponential equation is .

(b)

Find the CPI in .

Growth rate of inflation between and .

So the time period is .

 

.

Find when CPI exceeds 350.

Apply logarithm on each side.

.

CPI exceeds after years, so CPI exceeds after  .

(a) Exponential equation is .

(b)

CPI in is .

CPI exceeds after  years.



TESTIMONIALS

"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!"

June Barnett

"Your site is amazing! It helped me get through Algebra."

Charles

"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful."

Dan Pease

QUESTIONS? LET US HELP.
Simply chose a support option

My status

JOIN US ON:     
mathskey.com is not affiliated with any Publisher, Book cover, Title, Author names appear for reference only