Answer:
Step-by-step explanation:
Cost = 2.49 * y
You really should spend the time. Math is used everywhere.
Answer:
D. 
Step-by-step explanation:
Area of rectangle = 
Length of rectangle = (x - 8)
Width = (x + 11)
Area of rectangle = 
Expand the expression
(distributive property of multiplication)

Combine like terms

Expression for the area of the rectangle = 
There could be five in each class.
Answer:
1.5 times.
Step-by-step explanation:
6.75 / 4.5 = 1.5.