Sean , a middle schooler, has been selling peices of gum at lunch for a while. The table below models the relationship between peices of gum sold and cost a ; write an equation that represents the relationship between number of pieces sold , x , to the cost , y. b ; how many pieces of gum would a student be able to purchase for $10 ?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Which value of y will make the inequality y< -1 false?

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b. false