You need to hire a plummer, and plumbing company A charges $55 per hour and an $80 service call, while plumber B charges $60 per hour and a $65 service call. At how many hours will the two plumbers cost the same? What is the price?

Use the inverse of the function y=x^2-18x to find the unknown value [tex]y = \sqrt{bx + c \: + d} [/tex]

If 20% of a number is 35, what is 50% of that number?

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?