Which set of ordered pairs represents a function? A. {(-1.5, 3), (-2.5, 3), (0, 3), (3.5, 3)}
B. {(2, 12), (6, 15), (-2, -1), (6, 3), (8, 8)}
C. {(7, 1), (7, -1), (5, 2), (5, -2), (3, 3)}
D. {(1.2, 3), (2.2, 4), (3.2, 5), (3.2, 6)}

He concluded that a heavier object dropped from the same height as a lighter object will land

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.