2) fred sold half of his comic books and then bought 7 more. he now has
18. how many did he begin with ?

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)?

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?