Fred spends $3.15 on 4 1/2 pounds of peanuts. how much did he pay for each pound of peanuts

Can any one me with the answers to these questions asap?

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?

If chord ab is congruent to chord cd, then what must be true about ef and eg?