Solve the system x-z=5, 2x+y = 7, y+3z=12

Anna found the difference between thirteen and the product of four and a number. Which expression represents this phrase, and what is its value if n = 3?

In February, Alec had 1,568 visitors to his website. In March, he had 1,312 visitors to his website. What is the percentage decrease of the number of visitors to Alec's website from February to March?

A = 8x - 10° B = 3x + 90° Solve for x and then find the measure of B:

Suppose you buy a raffle ticket in each of 25 consecutive weeks in support of your favorite charity. one of the 1200 raffle tickets sold each week pays $2000. what do you expect to win for those 25 weeks, and with what standard deviation?

It has three more sides than triangle

14 plums cost $2.00. What is the cost, to the nearest cent, of 50 plums?

List the perfect cubes between 1000 and 3000

Cathy earns $13.50 per hour for the first 40 hours worked in a week and $20.25 per hour for hours over 40. If she earns $661.50 one week.

Tell which property is being illustrated. 13 + (29+7) = 13 + (7+29)

8$ of 25$ earned as profit what is the percentage