Joanna has 3 more books in her backpack then sophie. if sophie has n books, haw many does joanna have?

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1