answer key jackie has two summer jobs. she works as a tutor, which pays $12 per hour, and she works as a lifeguard, which pays $9.50 per hour. she can work no more than 20 hours per week, but she wants to earn at least $220 per week. which of the following systems of inequalities represents this situation in terms of x and y, where x

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

Determine which postulate or theorem can be used to prove that lmn =nmo

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?