You divide 2930 by 34 to get about 86.1765
(I think)
a. A' means the complement with respect to Z? If so, then
To know A' you need to write all the elements in Z that are not in A.

b. All the subsets of B, is knowed as P(B),

c.
(Add to A the elements of B, or equivalently add to B the elements of A)
d.
express informally speaking the elements that have in common, but there is no element in common, so

First we divide 162 by 18. Our answer is 9. She earns 9$ for every hour she works. We then divide 207 by 9 and we get 23.
Answer: 23
The other endpoint would be (-17,-29)