Click through the graphs and select the one that could represent the relationship between the cost, c, of a call and the
time, t, for the cell phone plan shown below.
time in hours 0 1 2 3
cost in dollars 10 13 16 19

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

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

Select all of the following expressions that are equal to 2.5.