23. Find the area of the rectangle.

Answer:
A= 7x+21
Step-by-step explanation:
A= 7*(x+3)
A= 7x+21
Simply distribute the 7 by multiplying it with everything in the parentheses.
Answer: 7x + 21
Step-by-step explanation:
7(x + 3) = 7x + 21
Side times side