Jillian picks some grapefruit. She places all the grapefruits that weigh exactly į 1/2 pound into a bag. The total weight of the bag is 6 1/2 pounds. How many grapefruits are in the bag?

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10