Which algebraic expression is equivalent to the expression below?
7(3x + 5) + 13
A.
21x + 22
B.
21x + 48
C.
56x
D.
7x + 8
To find the equivalent algebraic expression, we need to distribute the 7 to both terms inside the parentheses:
7(3x + 5) + 13
= 7 * 3x + 7 * 5 + 13
= 21x + 35 + 13
= 21x + 48
Therefore, the equivalent algebraic expression is B. 21x + 48.