Langston has 45 greeting cards. He gives 18 of the cards to his friend what present of his greeting card he does give to his friend

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122