Mandy begins cycling west at 30 miles per hour at 11a. m. if liz leaves from same point 20 minutes later bicycling west at 36 mph when will catch mandy

The answer is 1:00 PM

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)