Question

Known that f(x)=2x-3. If the value of f(m) = 5 and f(-2) = n, then the value of m +n is...​

Answer 1

Explanation:

f(x) = 2x - 3

f(m) = 5

that means

5 = 2m - 3

8 = 2m

m = 4

f(-2) = n

that means

n = 2×-2 - 3 = -4 - 3 = -7

so,

m + n = 4 + -7 = -3