The length of a rectangle is 3 cm less than twice its width if the perimeter of the rectangle is 18 cm find its dimensions

let width be x

Step-by-step explanation:

2x-6+3+2x-6+3=18

4x+6=18

4x=18-6

4x=12

x=12/4

x=3

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)