Colin just graduated from college with a degree in engineering. he decided to create a personal budget to him pay all of his bills and still save money for retirement. his first monthly paycheck, after taxes, was $3,900. he had the following expenses. fixed expenses (rent and monthly bills) were $2,535. he spent $507 for food. entertainment cost him $390. the remainder of his paycheck colin placed in a savings account for retirement. what percent of his paycheck did he save for retirement?
a. 12%
b. 22%
c. 17%
d. 7%

Walgreens sells both kleenex and nyquil. in a random sample of 5000 purchases, it was found that 1200 contained kleenex and 540 contained nyquil. these are not independent because sick people are more likely to buy both and healthy people more likely to buy neither. in looking into that, it was found that 360 purchases contained both. a. make a two-way table to display this information. fill in the table with the missing entries, and be sure your table has row and column totals. b. if we randomly select a purchase that contained kleenex, what is the probability it also contained nyquil? c. what percent of all purchases didn’t contain either product?