Solve using double angle formula?

Acompany that makes? hair-care products had 5000 people try a new shampoo. of the 5000 ? people, 35 had a mild allergic reaction. what percent of the people had a mild allergic? reaction?

V=x^4-y^4 pick three expressions that can represent the three dimensions of the prism (each in meters)

Solve -3 (r + 5) = -9 enter ur answer in the box x = __