Which set of ordered pairs is not a function? a. {(1, 7), (2, 7), (3, 7), (4, 7)}
b. {(–2, 1), (0, 4), (2, 9), (4, 16)}
c. {(1, 0), (3, 2), (5, 4), (7, 2)}
d. {(3, 4), (6, 8), (9, 5), (3, 3)}

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

How many solutions does the nonlinear system of equations graphed below have?

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.