Parker opens his door 65° and then stops because a slipper is stuck under the door. He removes the slipper and then opens the door another 15°. Write an equation to show how many degrees Parker opens the closet door in all.

other answer is correct. i had used the radius of the radius somehow. a website:

english maybe i can ..

step-by-step explanation:

total income = price of one ticket   *   number of tickets sold

  y                 =     4                                   x

so the equation is y=4x     with x≥0   because number of tickets sold can not be negative

thus the equation is a semi -line with an end point at

(0,0)

passing through :

x=1     y=4(1) = 4   so through (1,4)