All plain sandwiches at king’s sandwiches cost $4.75. If a customer wishes to add toppings to the sandwich, they pay an extra $0.50 per topping. Write a function (equation) describing the cost of a sandwich.

its electric no smoke

step-by-step explanation:

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)