Aball is made of a plastic sphere covered with a layer of rubber. the plastic sphere has a radius of 18 in., and the ball itself has a radius of 21 in. what is the volume of the rubber layer? use 3.14 to approximate pi and express your final answer in hundredths.

Plzzz i beg u so much asap ! what is the slope of this line? enter your answer in the box.

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

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