Solving literal equations a-bc=d solve for a

Will give find an equivalent function to f(x)=5(2)^3x. the 5(2)^3x means 5(2) to the 3x power answer choices: a: f(x)=125^x(8)^x b: f(x)=10^2x c: f(x)=40^x d: f(x)=5(8)^x

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Ineed to know the answer right now! !