Question

The price of products may increase due to inflation and decrease due to depreciation. Derek is studying the change in the price of two products, A and B, over time.

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. (5 points)

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


t (number of years) 1 2 3 4
f(t) (price in dollars) 10,100 10,201 10,303.01 10,406.04

Answer 1

Hi, The answer is B! Product A has a fixed changing, that is 0.7107
while the changing of product B increases every year.

Answer 2

Will you tell me what to put for Part A? :)

Answer 3

@Vampirelove28

Answer 4

I will try, hold on one sec

Answer 5

okay :)

Answer 6

How much is it increasing each year?
Look at 10,201 / 10,100. What do you get?

Answer 7

so it would be 1.01

Answer 8

Same for 10303.1 / 10201 so that's the common ratio?

Answer 9

so whats part A?

Answer 10

I dont really know the answer to A. I am trying to fifger it out but I ceep on getting stuke, Sorry I cant help you with A, But I hope I helped you with B!!!!

Answer 11

this the part b lol

Which product recorded a greater percentage change in price over the previous year? Justify your answer. (5 points

Answer 12

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

Answer 13

no just open study didnt let me fit it all

Answer 14

O ok, Ok first tell me what you think the answer is? I wont to see if you at least understand sum of it.

Answer 15

Product A has a fixed changing while B increases every year?

Answer 16

ok so that is right, But why?

Answer 17

I'm not really sure

Answer 18

OK then, because that is the part a lot of people have trouble with it, I though would not know, here is a link that will help you! http://www.jiskha.com/display.cgi?id=1439237977