What is the solution set for the open sentence with the given replacement set? 3x + 4 = 19, {4, 5, 6, 7}

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

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?

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.