Alison paid $21.75 for a number of packs of rice crackers. 3 packs of rice crackers cost $1.45. how many packs of rice crackers did alison buy? if she were to buy 60 packs of the same rice crackers , would $30 be enough to pay for them

Answer this 30 points and brainliest!

What is 1/2 x (6 x 4)+3 + 2 show your work

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?