Result, Rachel can be certain that the temperature is suitable for her cake.
(15 qt/hr) x (1/4 gal/qt) x (1/60 hr/min) =
(15) / (4 x 60) = 0.0625 gal/min
For perimeter you just add the sides up, so 15+12+9 which = 36
Ok. First you have to find the unit rate. Since you can buy 9 packages of grapes for $24, then you can get 1 grape package for $2.6667. If you have $8, you can buy 3 packages of grapes.
You have a 30 out of 37% chance so i would say 53 cents
i hope this helps at least a little
good luck!