Alex was thinking of a number. Alex adds 13 to it, then doubles it and gets an answer of 84.5. What was the original number?

What is 9 times 2.75

If you charge $80 per ticket and sell 5000 tickets. How much do you make?

The width of a bookshelf is 2 feet shorter than the height. if the width is 1.5 feet, what is the height of the bookshelf

A family charges a trip to the zoo on a credit card. The simple interest rate is 12%. The charges are paid after 3 months. What is the total amount paid for the trip? Round your answer to the nearest hundredth.

A recipe calls 2 1/3 cups of flour, but Paul only has 2 1/6. How much more flour does he need?

it takes the earth 24 hours to complete a full rotation. It take the sun approximately 25 days, nine hours, and seven minutes to complete a full rotation. How many hours does it take the sun to complete a full rotation?

you need 418 yards of blue silk to make one bridesmaid's dress and 358 yards of the same fabric to make another. How many yards of blue silk do you need to make both dresses?

What is the answer to x/3-9=-5

One of the highest snowfall rates ever recorded was in silver lake, colorado, in april 1921, when just over 7 feet of snow fell in 27.5 hours. what was the rate in inches per hour

On a sunny day an office building casts a shadow that is 80 feet long. At the same time, a 5 foot person casts a 6 foot shadow. Determine the height of the office building to the nearest foot.