#3 PLS HELP I WILL MARK BRAINLIEST IF YOU TRY/GET IT RIGHT

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

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?

What are the solutions of the equation x4 – 5x2 – 14 = 0? use factoring to solve. someone !