I think it would be B i hope this helps
The value of x = 1
5x + 15 = 20
- 15 -15
5x = 5 ( Divide by 5)
It's 21.125 hope this works good luck ;)
First rewrite it like this
1. y=5/4x
Then, make X the subject
2.4x=5/y
x=(5/y)÷4
3. Once done, simply replace x with h(x)^-1 and y with x
h(x)^-1= (5/x)÷4
Sorry I'm not very good at rearranging formula but hope this helps :)
48 is the answer.I hope this helps
