Question

Select the correct answer. Identify the expression equivalent to 4(x + x + 7) - 2x + 8 - 4 by substituting x = 1 and x = 2.

a) 6x + 11
b) 3(x + 7)
c) 2(3x + 16)
d) 3x + 16

Answer 1

To identify the expression equivalent to 4(x + x + 7) - 2x + 8 - 4 by substituting x = 1 and x = 2, you substitute each value into the expression and perform the necessary calculations.

Step-by-step explanation:

To identify the expression equivalent to 4(x + x + 7) - 2x + 8 - 4, we substitute x = 1 and x = 2.

Step 1: Substitute x = 1.
4(1 + 1 + 7) - 2(1) + 8 - 4 = 4(9) - 2 + 8 - 4 = 36 - 2 + 8 - 4 = 38 - 6 = 32.

Step 2: Substitute x = 2.
4(2 + 2 + 7) - 2(2) + 8 - 4 = 4(11) - 4 + 8 - 4 = 44 - 4 + 8 - 4 = 40.