Donna received a $90 gift card for a coffee store. she used it in buying some coffee that cost $7.24 per pound. after buying the coffee she had $53.80 left on her card. how many pounds of coffee did she buy

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

Does anyone know how to do geometryme with this problem

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.