I need help with B questions 1 and 2 ASAP!

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

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Use the distance formula to find the distance between (-3,5) and (3,1)