For the first question you need to find the formula for the rectangle, after you did that fill it in. and find your answer.
Answer:
$19
Step-by-step explanation:
11+8 because every hour is =4 dollars and he was there for two hours which gave him 8 so 11+8=19 Jordan has to pay 19 dollars
Answer:
6
Step-by-step explanation:
i guess
Equate whats inside (arguments) 
with base period of sine function 
and solve for x to get period,
So the period of the graph of the given function is precisely 2.
Hope this helps :)
