Alisa hopes to play beach volleyball in the olympics someday. she has convinced her parents to allow her to set up a beach volleyball court in their backyard. a standard volleyball court is 26 feet by 52 feet. she figures she will need the sand to be one foot deep. sand a is 60 lbs for $5 sand b is 150 lbs for $12 a. what's is the rate brand a is selling for? give rate and then specify the unit rate. b. which brand is offering the better value? explain.