9-2(4x+5) if x=-4
9 - 2
X = -4.
9 - 2(4x+5) = 9 - 2(- 16+5) = 31.
My money is on Henry's solution
To find the value of the expression 9 - 2(4x + 5) when x = -4, you need to substitute x with -4 in the given expression and perform the necessary calculations step by step.
Step 1: Substitute x with -4
9 - 2(4(-4) + 5)
Step 2: Simplify within the parentheses
9 - 2( -16 + 5)
Step 3: Continue simplifying within the parentheses
9 - 2(-11)
Step 4: Apply the multiplication inside the parentheses
9 + 22
Step 5: Perform the addition
= 31
Therefore, when x = -4, the value of the expression 9 - 2(4x + 5) is 31.