Which function is a quadratic function?
Of(x) = (x - 4)2 + 3
O q(x) = (2x + 4)3 + 3
O M(x) = (-6x - 4)4 + 3(x + 2)2
Os(x) = -(x - 6) + 3(x + 1)

The sum of two numbers is 86, and their difference is 20. find the two numbers

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

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in