Alisa buys a watermelon every year. The first time she bought a watermelon, it cost $2.50. She notices the price is getting more expensive, at a rate of 3% per year.

Alisa sketches a graph of the situation, labeling the y-intercept and the point representing the price in Year 4.

Which statements are true?

Select each correct answer.

http://prntscr.com/dilnbz

Question

Alisa buys a watermelon every year. The first time she bought a watermelon, it cost $2.50. She notices the price is getting more expensive, at a rate of 3% per year.

Alisa sketches a graph of the situation, labeling the y-intercept and the point representing the price in Year 4.

Which statements are true?

Select each correct answer.

 http://prntscr.com/dilnbz

yuii · Answer

A, D, and E?

kittiwitti1 · Answer

A & E: accurate
D: calculating...

kittiwitti1 · Answer

What equation did you use for the function graphed?

yuii · Answer

I don't remember.

kittiwitti1 · Answer

Okay, well... the price started at 2.50 and increases by 3% each year.
Year one: 2.50+0.03(2.50)
Year two: (year one)+0.03(year one)
Year three: (year two)+0.03(year two)
Year four: (year three)+0.03(year three)

And so on...

kittiwitti1 · Answer

I guess function form would be $f(x)=x_{n}+0.03(x_{n})$? Or something like that.

kittiwitti1 · Answer

I'm not very good at these.

yuii · Answer

It's fine. 
I'll just ask someone else.