What is 5c+1=7c-8 solved for the given variable

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

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Which statement about the annual percentage rate (apr) is not true?