Find the solutions in the interval [0, 360]

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

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

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)