1.Which set of points does not represent a function? 1) {(-3,-2).(-1,-2),(0,-1),(1,0))
2) {(-2,3), (0,4),(3,-2),(4,2)}
3) {(2,-2), (1,4),(2,5),(3,6)}
4) ((-2,4),(1,1),(2,4),(3,9)}

Find the value of the cosine for angle a

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible