Answer:
The electrician charges an initial fee of $42", AND "The electrician charges $22 for every hour worked" is true.
Step-by-step explanation:
(a^b)^c
=a^bc
so
7^24 is the answer
20 - 6c
because that shows that 6c is the cost of them and you'd take the cost of them away from how much he payed i guess
7 1/2 hours I believe is the correct answer. Hope it works!