Alexis bought x boxes of cereal for $3 each, including tax, and paid with a $20 bill. Which expression represents the total amount of change she should receive? pick one of the following

20 - 3x

(3 - 20) x

3x - 20

(20 - 3) x

How to write an area formula using the sides of the triangle a, b, c?

2x + y = 3 x - 2y = - 1 If equation two is multiplied by - 2 and then the equations are added, the result is what?

For each charity donation made by an employee of Tillman Corporation, the company will contribute an additional 40% of the amount. Last month, Tillman donated $3540. If 118 employees donated, what was the average contribution of each employee?

2.5 inches for every 10 feet of run what is the slope

Rob spent half of his weekly allowance on candy. To earn more money his parents let him weed the garden for $7. What is his weekly allowance if he ended with $12?

The square of a positive number decreased by twice the number is 48. Find the number

A beverage manufacturer performs a taste-test and discovers that people like their fizzy beverages best when the radius of the bubbles is about 0.3 mm. According to the formula below, what would be the volume of one of these bubbles?

A rectangular park is 16 miles long and 8 miles wide. How long is a route that runs diagonally across?

Galileo saw that much of the moon's surface is covered with round pits called a. highlands. b. seas. c. craters. d. maria.

In a meeting of 3 representatives from each of 6 different companies, each person shook handswith every person not from his or her own company.