Question

For h (X) = za

h
2
1
2 + 3 find the value of x
2
for which h (X) = 9

Answer 1

h(x) = 9

1/2x +3 = 9

1/2x = 9-3

1/2x = 6

x = 6÷1/2

x = 12

Answer 2

x = 12 when h(x) = 9

Solving:

[] The problem:

h(x) =
`(1)/(2)`x + 3

[] Plugging in our known values:

-> h(x) = 9, not h(9) where x = 9

9 =
`(1)/(2)`x + 3

[] Solving:

-> The problem

9 =
`(1)/(2)`x + 3

-> Subtract 3 from both sides

6 =
`(1)/(2)`x

-> Divide both sides by 
`(1)/(2)`

12 = x or x = 12

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather