Which of the following expressions represents a function?

a.{ (1, 2), (4, - 2), (8, 3), (9, - 3) }

b. y2 = 16 - x2

c. 2x2 + y2 = 5

d. x = 7

A bedroom is 15 ft long and 12 ft wide. How much will it cost to carpet the room if carpeting cost $22 per square yd? (1 yd=3ft)

The height in meters of a rocket launched from the ground after t seconds is modeled by h (t) = - 9.8r^2+49t. Graph a graph representing the interval of time when the rocket will be higher than 40 meters

Solve the equation. 6.35 + b = 9.89

The area of is 18 ft2, and the area of is 32 ft2. If, what is the ratio of LM to FG?

It costs $2.50 $2.50 to rent bowling shoes. Each game costs $2.25 $2.25 . You have $9.25 $9.25 . Write and solve an equation to find how many games x x you can bowl.

The expression 32-48 factored using the GCF is .

A guy walks in the store and steals 100 without the owners knowledge. He comes back 5 minutes later and buys 70 dollars worth of goods with the 100 dollar bill. The owner gives him back 30 in change

The probability of a randomly selected car crashing during a year in a certain country is 0.04780.0478. if a family has three three? cars, find the probability that at least one of them has a car crash during a year.

1/2n-17/12=2/3n-13/6

Every day two sisters eat the same number of gluten-free rice cakes. Susanna eats 4/5 of a rice cake. Melanie eats 2/3 of a rice cake. How many rice cakes do they eat in one day?