Plzz ! part a: if (7^2)^x = 1, what is the value of x? explain your answer.

part b: if (7^0)^x = 1, what are the possible values of x? explain your answer.

Gigi earned $65 for 5 hours of gardening. she earned $90 for 9 hours of office work. which statement correctly compares gigi’s earning per hour for gardening and office work? she earned $3 more per hour for office work than for gardening. she earned $4 more per hour for office work than for gardening. she earned $3 more per hour for gardening than for office work. she earned $4 more per hour for gardening than for office work.