EASY 10 POINTS AND BRANLIEST Write an inequality that represents this situation below. Be sure to define your variable in words.
Louise is buying lunch for herself and her 2 friends. She only has $20 to spend.

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.

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano

Three lines meet at a point. set up and solve an equation to find the value of (a) is your answer reasonable? explain how you know