An investor bought a number of shares of stock for 1,600. after the price dropped by $10 per share, the investor sold all but 4 of her shares for 1,120. how many shares did she originally buy?

Agrocery store has 12 lb of trail mix that is 10% banana chips. the store's manager would like to add banana chips to bring the new mix up to 25% banana chips. write and solve a system of equations to find out how many pounds of banana chips manager needs to add.

Which graph shows a function with a range of all real numbers greater than or equal to -1

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1