The domain is the variation of values that x can equal. In this case, the domain is from 5 to infinity.
Answer:
k = 33
Step-by-step explanation:
7 + k/3 = 18
=>7 + k/3 -7 = 18 - 7
=>k/3 = 11
=>(k/3) * 3 = 11 * 3
=>k = 33
Alrighty.
First we need to make them all simplified.
So simplified would be

times

times

.
Then we multiply the numerator and the denominator. The final answer is

Simplified is