Andrew wants to buy a pair of jeans costing $60. Sales tax on his purchase is 13%.
a)
How much tax will Andrew be charged?

Solve the system of equations. y= 2x y= x^2 - 15

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?