Question

For f(x) = - 2x + 7,
find the value of f(-3) + f(5).

Answer 1

The value of f(-3) + f(5) is 10

Explanation:

Given;

• f(x) = -2x + 7
• f(-3) + f(5)

So,

f(-3) = -2x + 7

f(-3) = -2(-3) + 7

f(-3) = 6 + 7 = 13

f(5) = -2x + 7

f() = -2(5) + 7

f(5) = -10 + 7 = -3

Here, The value of f(-3) + f(5)

= f(-3) + f(5)

= 13 + (-3)

= 13 - 3

= 10

Thus, The value of f(-3) + f(5) is 10