Mary and roberto bought identical backpacks at different stores. marys backpacks originally cost $65 and was discounted 25%. robertos backpack orignally cost $75 and was on sale for 30% off the original price. which backpack was a better buy?

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25