5 times the sum of 12 and a number is 80

What is the value of the unknown number

What is f (-x), if f (x) = 2|x|+3x

When harry recipe on a 3" x 5" index card that he wants to enlarge to 15 inches long how wide will the enlargement be?

6 students want lemonade and 12 students want iced tea. What is the ratio of the number of students who want iced tea to the number of students who want lemonade?

Kara's backpack contains 4 boxes of pencils. Each box contains "p" pencils. Kara's back also contains 6 pens. Write three equivalent expressions for the total number of pencils and pens in Kara's backpack.

How to round off 2,035 to nearest tens?

Can you simplifie 0.456/100 and if you can't can you tell me

He ratio of girls to boys in Liza's classroom is 55 to 44. How many girls are in her classroom if there is a total of 2727 students?

How can u describe how to find area and perimeter in your classroom

Sandra has a balance of 2,745 on her credit card. If the card has an annual rate of 25.49% how much is the finance charge for this month?

An investment grows by 5% per year for 20 years. By what percent does it increase over the 20-year period?