3 A store is having a sale. Each customer receives either a 15% discount on purchases
under $100 or a 20% discount on purchases of $100 or more. Kelly is purchasing some
clothes for $96.60 before the discount. She decides to buy the fewest packs of gum that
will increase her purchase to over $100. The price of each pack of gum is $0.79.
After the discount, how much less will Kelly pay by purchasing the clothes and the gum
instead of purchasing only the clothes? (Assume there is no sales tax to consider.)
A $1.05
B $1.67
C) $3.69
D) $3.87

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?