Ralph paid $45 for 3 cardio dance workout classes. He's trying to set up an equation to help him find cost of each class. What should Ralph put in the blank of the following equation? c = $ _÷ 3?​

Given the following statements, which is the best

Which is the correct excel formula for the 80th percentile of a distribution that is n(475, 33)? =norm.dist(80,475,33,1) =norm.inv(0.80,475,33) =norm.s.inv((80-475)/33)?

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.