1. For the Spring Festival, the Math Club is selling rulers for $2.50 and compasses for $1. While the club
would like to sell as many items as they can to raise
funds, they need to make at least $15.00 to break
even.
Write an inequality to represent this situation. Let x
represent the number of rulers sold and y represent the
number of compasses sold.

Need ! a certain ultraviolet ray has a frequency of 1 × 1016 hz, and a certain infrared ray has a frequency of 2 × 1012 hz. which of the following is true? a. the frequency of the ultraviolet ray is fifty thousand times the frequency of the infrared ray. b. the frequency of the infrared ray is fifty thousand times the frequency of the ultraviolet ray. c. the frequency of the ultraviolet ray is five thousand times the frequency of the infrared ray. d. the frequency of the infrared ray is five thousand times the frequency of the ultraviolet ray.