A plumber charges a $70 call-out fee and then $90 per hour. Write an expression for the total cost of calling a plumber for x hours.

Convert 1/2 yard in inches

The Murphys are on vacation and want to go on a helicopter tour. The tour itself costs $125 per person and they also have to pay a fuel fee of $50. If there are four people in the family, how much will the tour cost them?

How to prank your substitute

Nicholas is driving a distance of 200 miles. He drives at a constant rate of 65 miles per hour.

What's the simplest for for 3/10

A triangle is formed with side lengths of 7 inches, 24 inches, and 25 inches. is the triangle a right triangle

How many minutes are there in 6 3/4 hours

A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. The researcher accepts the first five people who respond to the advertisement.

the sum of two times x and 3 times y is 5. the difference of x and y is 5 write two equations and fine the value of y

What is a example of a system