Question

Please help me figure this out!

For Part A I got increasing by 3% because (1.03) is greater than 1, but I'm not confident that it's right. But for Part B I don't know what to do! Please help.

The price f(x), in dollars, of product A after x years is represented by the function below:

f(x) = 0.69(1.03)x

Part A: Is the price of product A increasing or decreasing and by what percentage per year? Justify your answer.

Part B: The table below shows the price f(t), in dollars, of product B after t years:

(See attached picture.)

Which product recorded a greater percentage change in price over the previous year? Justify your answer.

Answer 1

A=P(1+r)^t
r=rate in decimal
if r>0, then increase
if r<0, then decrease

so
f(x)=bla(1.03)^bla
1.03=1+?
?=0.03=3% increase since

for the other one
percent increase=increase/original
original=10100
incresae from year 1 to 2 is 101
101/10100=1/100=1%

3%>1%



A. increaseing because the thing in parethasees is greater than 1
and r>0

B. 3%>1% and the rate is 1% and the part A is incresaing more