15-12 divided by 3= n. what is the value of the unknown number

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

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

Піf x = y and y= z, which statement must be true? оа. -x = -2 b. x= z ос. —x = 2 od. 2= x