An engineer stands 145 feet from a building. He uses a transit telescope that stands 5 feet from the ground and views the top of the building. He measures the angle of elevation to
be 50° from the horizontal, as shown in the diagram below.

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

Tatiana wants to give friendship bracelets to her 32 classmates. she already has 5 bracelets, and she can buy more bracelets in packages of 4. write an inequality to determine the number of packages, p, tatiana could buy to have enough bracelets.