6
I GUESSING BRO I AINT GOT TIME FOR THAT B

The domain of given function is <u>All real numbers</u>

For each value of x the function is defined.
Example -
The value is 
The value is 4

Answer:
27
Step-by-step explanation:
2x+2=52
2x=50
x=25
x+2=27
The constant variation k is 12
First you convert 20% into a decimal which is 0.2 and multiply that by 42 and you get 8.4, that's the discount. Then you subtract 8.4 from 42 and get $33.60 which is your answer. Hope this helps!!