Me simplify the radical expression. leave in radical form. show your work √7(√14 + √3)

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

Evaluate cos2θ for cosθ = square root of 3/2

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years