Write the solution set using interval notation.
-It takes 28 minutes to set up a candy making machine. Once the machine is set up, it produces 20 candies per minute. Use an inequality to find the number of candies that can be produced in 6 hours if the machine has not
Yet been set up.
A) at most 9520 candies
B) at most 3360 candies
C) at most 6640 candies
D) at most 120 candies

Question

Quizplus · Accepted Answer

The machine produces 20 candies per minute. In 6 hours, it will produce 20 * 60 * 6 = 7200 candies. Since it takes 28 minutes to set up the machine, the machine will not be producing candies for the first 28 minutes. In 28 minutes, the machine would produce 20 * 28 = 560 candies. Therefore, the machine will produce at most 7200 - 560 = 6640 candies in 6 hours if it has not yet been set up.

Write the Solution Set Using Interval Notation