Answer:
Step-by-step explanation:
+ we take t- number of tickets and each ticket cost $7.
So t is too the number of people who buy tickets, then

A) We can calculate the amount of money: M= 7t where 
B) The domain for t is
, t is an integer.
C) The range for the amount M:

70%
12+27+91 = 130
91/130 = .7
.7x100 = 70%
___
.700
7.00
70.0
Answer is 70%