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?

The function that gives the total number of glasses sold in the nth hour is
a.f(n)=10x1.2^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.10x1.2^n
b.0.5(10x1.2^n)
c.10x2^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?

The function that gives the total number of glasses sold in the nth hour is
a.f(n)=10x1.2^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.10x1.2^n
b.0.5(10x1.2^n)
c.10x2^n

immanuelv · Answer

10 is constant. so you add it for the function :D

anonymous · Answer

ok soo what ou mean ? so i just add 10+1.2^n ?

immanuelv · Answer

yeah :) you got it!

anonymous · Answer

so i got 11.2 ?.... what about the second choice?

immanuelv · Answer

what is the price sue is selling the lemonade for?

anonymous · Answer

is $0.50

immanuelv · Answer

so you multiply that with 10*1.2^n

anonymous · Answer

ohhh ok thanku :)

immanuelv · Answer

you're welcome :D