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

Choose all the expressions that are equal to 3/4 x 9

Write the word sentence as an inequality. A number D is greater than - 5 An inequality is

Valentina's birthday party will cost $5.92 if she invites 4 guests. How many guests can there be, at most, if Valentina can afford to spend a total of $7.40 on her birthday party? Assume the relationship is directly proportional.

At a discount furniture store, Chris offered a salesperson $600 for a couch and a chair. The offer includes the 8% sales tax. If the salesperson accepts the offer, what souls be the Price of the furniture, to the nearest dollar, before tax?

A town has a population of 13,000 and grows at 5% every year. What will be the population after 11 years to the nearest whole number

What is the speed of a plane that travels at a rate of 520 mph against a wind of r mph?

18. * Gillway Community College, 43 out of 381 students earned honors. At Montessa Valley Community College, 17 out of 108 students earned honors.

Using the distributive property of multiplication for 12: (8+7) we get

A bag contains five green gumdrops and six red gumdrops. if kim pulls a green gumdrop out of the bag and eats it, what is the probability that the next gumdrop she pulls out will be red? (5/11) (1/2) (6/11) (3/5)

If tam walks 2 miles to school during gym and runs 3 times as fast as Dante how many miles would Dante go if he ran 1 mile