I am stuck and getting a head ache please help

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

X2 + y 2 = 36 x + y = 6 solve the system of equations.

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.