Question

QUESTION 4

Let
et f(x)=
(2x+5,
if x<1
-3x+1, if x 1
Determine the value for f(3).
0-8
0 -12
O 16
O 3
O 11

Answer 1

`f(3) =-8`

Explanation:

Given

`f(x) = 2x + 5; x<1`

`f(x) =-3x + 1; x >1`

Required

Determine f(3)

f(3) implies that x = 3.

We make use of

`f(x) =-3x + 1`

Because x >1 (i.e. 3 > 1)

Substitute 3 for x in f(x) =-3x + 1

`f(3) =-3*3 + 1`

`f(3) =-9 + 1`

`f(3) =-8`