Evaluate each expression below for the given value. That is, find the value of the expression when the variable is equal to the value given.

Question

a. 2a - 7 when a = 3

b. 10 + 4m when m = -2

c. 9 + (-2n) when n = 4

d. x/2 + 5 when x = 6

Answer 1

This is a basic plug and chug problem.

For part A, you have 2a-7, where a = 3. Wherever you see the letter "a" you replace it with the value given which in this case is 3.

Solve problem: 2(3) - 7 = 6 -7 = -1

answer = -1

Part B.

Solve problem: 10+4m , where m = -2

10+4(-2) = 10 +-8 = 2

answer = 2

Part C.

Solve problem: 9+(-2n), where n = 4

9+(-2(4)) = 9+-8 = 1

answer = 1

Part D.

Solve problem: x/2+5, where x = 6

6/2+5 = 3+5 = 8

answer = 8