Question

Determine the range of the function f(x) =5x-3 when the domain is {0, 2, 4}

a. {-3, 7, 17}


b. {0, 10, 20}


c. {3, 13, 23}


d. {0, 2, 4}

Answer 1

Option A is correct.

When x=0
5(0)-3= -3

When x=2
5(2)-3= 7

When x=4
5(4)-3= 17

{-3,7,17}

Answer 2

0 ------ f(0) = 5(0) - 3
f(0) = 0 - 3 = -3

2 ------- f(2) = 5(2) - 3
f(2) = 10 - 3 = 7

4------ f(4) = 5(4) - 3
f(4) = 20 - 3 = 17

your answer is A