charley joined a gym where he had to pay a $50 initiation fee and then $35
per month. if his bill month came to $155, how many months had a
charley been going to the gym?

Right ∆abc has coordinates a(-7, 3), b( -7, 10), and c(-1, 3). the triangle is reflected over the x - axis and then reflected again over the y - axis to create ∆a'b'c'. which are the coordinates of vertex a'?