Question

I NEED HELP ASAP!!!!!!!!!!!!

1. What is the output value for the following function if the input value is 4.5?
y = 2x + 0.5
2
4.5
9.5
25

2. What is the output value for the following function, f(x) = 5x - 2 if the input value is 3?
1
13
17
51

3. Nina is participating in a swim-a-thon to raise money for a charity. For every lap that Nina swims, her grandmother has promised to donate $2.50. If Nina swims 18 laps, how much will her grandmother donate?
$45.00
$20.50
$18.00
$7.20

Answer 1

1. 2(4.5) + 0.5 = 9.5

2. 5(3) - 2 = 13

3. 2.5(18) + 0 = 45