Solve the equation for x by graphing

Elijah brought a total of 16 pounds of peanuts and cashew nuts and paid $49.50. if peanuts cost $2.75 per pound and cashew nuts cost $3.25 per pound, how many pounds of cashew nuts did he buy?

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?