Which of the following expressions represents a function?

a. x2 y2 = 9

b. { (4, 2), (4, - 2), (9, 3), (9, - 3) }

c. x = 4

d. 2x y = 5

Which of the following relations is a function? A. (2, 1), (-2, 4), (-5, 1), (2, - 5) B. (-5, 4), (-2, 6), (-5, 3), (7, 2) C. (-5, 1), (-2, - 5), (2, 5), (7, 1) D. (-5, 1), (-2, 4), (2, - 5), (-2, 6)

Tricias mother let her play outside for 15 minutes. When she went out side, she played with her dog for 5 minutes. Then she rode her bike for 4 minutes. She spent the rest of the time catching bugs. How many minutes did tricia spend catching bugs?

Count by 4 tens starting at 14

A parabola has vertex (0,-6) and passes through (-10,19). Write its equation in vertex form.

How many sides do a polygon have if the sum of the interior angles is 1,260

There are 3 strawberry ice creams, 4 chocolate ice creams, and 7 vanilla ice creams on a tray. barbara selects 2 ice creams at random without replacement. what is the probability that she selects 2 chocolate ice creams?

Sandy works at a store that sells clothing accessories. The supply function for scarves is P = Q-9, where Pis the price and Q is the quantity of scarves. If Sandy sells the scarves for $12 apiece, how many scarves will the store supply?

Store A: $25 for a 45 minute lesson Store B: $30 for a 1 hour lesson Store C: $45 for a 1.5 hour lesson Store D: $80 for three 1 hour lessons Julie wants to purchase swim lessons for her son. There are four different stores that offer swim lessons.

What percent of 123 is 140

What is a fraction of a pound in ounces?