Sue set up a lemonade stand and sold 10 glasses of lemonade in the first hour. Her sales increased at the rate of 20% per hour for the next n hours. Which function represents the total number of glasses she sold in the nth hour? If the price of 1 glass of lemonade is $0.50, how much money did she earn in the nth hour?

A. f(n) = 10 x 1.2^n
B. f(n) = 10 - 1.2^n
C. f(n) = 10 + 1.2^n

and the money she earned in the nth hour is

A. 10 x 1.2^n
B. 1.5(10 x 1.2^n)
C. 10 x 2^n

Question

Sue set up a lemonade stand and sold 10 glasses of lemonade in the first hour. Her sales increased at the rate of 20% per hour for the next n hours. Which function represents the total number of glasses she sold in the nth hour? If the price of 1 glass of lemonade is $0.50, how much money did she earn in the nth hour? 

A. f(n) = 10 x 1.2^n
B. f(n) = 10 - 1.2^n
C. f(n) = 10 + 1.2^n

and the money she earned in the nth hour is

A. 10 x 1.2^n
B. 1.5(10 x 1.2^n)
C. 10 x 2^n

anonymous · Answer

@dan815 @samanthagreer @confluxepic

anonymous · Answer

I think the answer to the first one is A but I'm not too sure.

anonymous · Answer

@mathmate

anonymous · Answer

Not A, C. I think the answer to the first one is C.

anonymous · Answer

first question is A second question is B i might be in 7th grade but i am great in algebra

anonymous · Answer

Oh okay, thank you so much! :)

anonymous · Answer

I might have more questions if you could help me with those too?

anonymous · Answer

okay