How do i use the properties of equality

An angle measures 42 less than its complementary angle. What is measure of each angle?

1. Long distance phone calls cost 75 cents plus 15 cents for each minute. Write and solve an expression to calculate the cost of a 9-minute phone call.

What is the input value for which f (x) = -3

The high temperature one day was - 1 F. The low temperature was - 5 F. What was the difference between the high and low temperature for the day?

Solve 2x - 1 > 9 fml

What is the constant of 6y=8x?

Which description could be written as a linear function?

Mr. Slater invested $100,000 in a portfolio that is contains 60% stocks and 40% bonds. Over the course of a year, the value of the stocks increased to 67%, and the value of the bonds decreased to 33%. The current value of his investment is $118,400.

Find the area 9cm 8cm 13cm 9cm 11cm

What is the answer of 7/10 * ?/10 =