Answer:
D) 15
Step-by-step explanation:
To solve for the equation 20(2x - 8) = 440, we will need to work backwords to isolate the variable, x.
First, simplify both sides of the equation:
20(2x − 8) = 440
(20)(2x) + (20)(−8) = 440
40x + (−160) = 440
40x − 160 = 440
Second, add 160 to both sides.:
40x - 160 = 440
40x − 160 + 160 = 440 + 160
40x = 600
Third, divide both sides by 40:
40x = 600
40x/40 = 600/40
x = 15
