Simplify
plz

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Angela is buying a dress that is on sale for 20% off. if the original price of the dress is $40.00, how much money is angela saving on the dress? a. $0.80 b. $3.20 c. $32.00 d. $8.00

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).