Mark has 312 books in his bookcases. He has 11 times as many fiction as nonfiction books. How many fiction books does Mark have?

A company offering short term loans agrees to lend Nick $1,200. The amount (plus interest) is repayable in one year, and the interest rate is 12% per month.

How do you estimate21 * 78

600 feet of fence surround a rectangular playground that is 100 feet wide. How long is the playground? A. 400 b. 500 c. 300 d. 200

Evaluate this exponential expression. 3,125 25 10

How do you add 2 and 2 to make 4

Solve for x. x/9 = 14 (A) 126 (B) 130 (C) 139 (D) 146

A copiy machine can duplicate 2400 copies in one hour. How many copies can it make in 5 hours?

Write $1.50 to $2.50 as a fraction in simplest form

A study of college graduates involves three variables: income level, job satisfaction, and one-way commute times to work. List some ways the variables might be confounded. a.) People with long commutes will have very high incomes. b.

What is 10.31 as a mixed number