Quadrilateral abcd has side lengths of ab = 2z + 2, bc = 8, cd = 5z – 10, and ad = 8. find the value of z for which quadrilateral abcd is a parallelogram.
a. 1
b. 2
c. 3
d. 4

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

A50% increase followed by 33 1/2% decrease