This is the answer for both number 9 and number 11.
Good luck
Answer:

Step-by-step explanation:
The side length of a square is represented by the expression 2x + 5.
The area of a square is given as:

where a = length of side of the square
The area of the square is therefore:

The perimeter of a square is given as:

The perimeter of the square is therefore:

The difference between the area of the square and the perimeter of the square is:

The expression that represents the difference between the area and the perimeter of the square is:

Answer:
1.= 2.4 Hours
2.= 8 miles per hour
3.= 150 miles per hour
Step-by-step explanation:
A = 1/2 bh = 1/2 (3)(4) = 12/2 = 6
answer is B. 6 square units
154.35 - 10.37 = 143.98
143.98 - 27.83 = 116.15
10.37 = 116.15x
x = 0.0893
Change x to percent form to get 8.93% tax rate.