Find all positive numbers $x$ such that $\displaystyle{\ln (x^3) = 7}$.

You need to use the rules of logs for this.

ln(x^3)=7
3*ln(x) =ln(7)
3/x=ln(7)
3=ln(7)*(x)
3/ln(7)=x is exact answer to approximate x
x= 1.542

Hope this helps! Any questions please ask! Thank you!

Ithink you're supposed to multiply 12.50 which is how much he makes per hour and then multiply it by each number then add whats left togrther and there's your answer