5 (a-2b) when a=-3 and b=5

a. 65

b. 35

c. - 65

d. - 25

5 (a - 2b)

First, make sure to substitute the numbers in for a and b. / Your problem should look like: 5 * (-3 - 2 * 5)

Second, simplify 2 * 5 to 10. / Your problem should look like: 5 * (-3 - 10)

Third, simplify - 3 - 10 to - 13. / Your problem should look like: 5 * - 13

Fourth, simplify. / Your problem should look like: - 65

Answer: - 65 (C)