18. Consider this system of equations: 2/3x+3/5y = 12 (equation A)
5/2-3x = 6 (equation B)
The solution for the system of equations is

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Aline passes through 3,7 and 6,9 what equation represents the line

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?