The graph shows the cost c in dollars of w pounds of a proportional relationship slelect all true statements a 2.5 pounds cost 1 dollar. 1 pound cost 2.50 . 5 pounds cost 12.50. 9 pounds of peanuts cost 19.50. the point 4 ,10 is on the graph of the proportional relationship

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)