Answer:
-2
Step-by-step explanation:
h(-5) represents the y value when x is -5.
Answer:

Step-by-step explanation:
Given

Required
The period
A sine function is represented as:

Where

By comparing:
and 

So, we have:


Hence, the period of the function is 
1/4 of a slice since the pizza is 5/4 and only 5 people need a slice
Answer:
The first friend
Step-by-step explanation:
Because if you distributed the 7 then you will also get 7x.