Question

Given îx)= 10-2x, find f(7).
o 4
o 3
o 7
o 56

Answer 1

• Given,
  `f(x)=10-2x`

`\rm \longmapsto \: f(x) = 10 - 2x`

`\rm \longmapsto \: f(7) = 10 - 2(7)=10-14=-4`

Answer 2

-4

Explanation:

f(x) = 10-2x

Let x = 7

f(7) = 10-2(7)

=10 -14

= -4