Question

3. If g(x) = x2 + 3, find g(4). (1 point)
11
19
16
8
4. If h(x) = 2x + 1, find the value of x if h(x) = 11. (1 point)
5
23
6
10

Answer 1

Substitute the values.

3. g(x) = x^2 + 3, find g(4)
So, 4 = 4^2 + 3.
Can you simplify from there?

4. If h(x) = 2x + 1, find the value of x if h(x) = 11
So, 11 = 2x + 1 and solve for x.

Answer 2

I am not quite sure what you mean by simplify, I am kind of slow with algebra. sorry:(

Answer 3

Its alright, just solve the equation...
For #2 you need to find the value of x.
11 = 2x + 1
Subtract 1 from both sides.
11 - 1 = 2x
12 = 2x
divide by 2.
x = 6

Do you understand the point?

Answer 4

Okay thank you so much, Yes i kind of understand now...

Answer 5

g(4)=4^2+3=16+3=19

for the other question, it's as @jazy did it

Answer 6

Thank you guys <3

Answer 7

I have one more question though....

Answer 8

If g(x) = 2(x − 4), find the value of x if g(x) = 20. (1 point)
32
12
14
10

Answer 9

Yea #1 is as @josiahh did it, my bad. (:

Answer 10

g(x) is 20
So:
g(x) = 2(x − 4)
20 = 2(x - 4)
Distribute.
20 = 2x - 8
Add 8.
28 = 2x
Divide by 2.
x = 14

Answer 11

same step as @jazy for the other one... now you just need to distribute the 2 first
g(x)=2x-8

Answer 12

I totally understand now! thanks (:

Answer 13

Glad to hear that. (: