What does solution to the division mean and what does it tell you

Write a numerical expression that satisfies all of the following conditions. 1.)the only number used in the expression is 5 2.)at least one exponent other than 1 is used 3.)when the expression is evaluated, the answer is greater than 40 and less than 50

What is the base of 1/9 to the power of 2

Which of the following is the true for f(x) = 5cos