Ratios : a store is having a sale on books may bought 5 books and spend $40 if she buy 2 more books how much will she pay

What can you determine about the solutions of this system

Answer for 10 points show work you guys in advanced < 3

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