My family went out to dinner. Our bill came to $115. We want to tip the waiter 20%. What is the total amount we should pay just for tip? (Do not add $ sign to your answer.) *

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

Find the domain of the following expression: 1/(√x)-2