Solve for x.

28/21 = 42/x

A. 14

B. 18 2/3

C. 31 1/2

D. 56

Shaquille pays $7.50 of his monthly life insurance premium, and his employer covers the rest. If his monthly premium is $29.75, what is the annual value to Shaquille of this benefit?

Subtract 2x^2 - 3x+5 from 4x^2-5x+10

A ship is 2.8 degrees off course. If the ship is traveling at 14 mph, how far off course will it be after 2 hours?

The octal system uses base 8. the only available digits would be 0, 1, 2, 3, 4, 5, 6, and 7. if the value 2468 is converted to decimal value, it would be expanded as (2 * 82) + (4 * 81) + (6 * 80). what would be the result of this

Out of 60 people surveyed at the movies, 45 people said they bought popcorn. If there were 420 people at the movies how many would expect to buy popcorn

Which number is its own opposite

Simplify 4-6+2x-9x-8

Evaluate. 6+5|4-3^2| A. - 19 C. 31 D. 55

Gene McDonald's bank granted him a single-payment loan of $5,000 for 90 days at 9% exact interest. What is the amount of exact interest owed?

How to solve a composite figure