This graph and table show the total number of people, p, who have bought tickets to a concert t minutes after they went on sale. Plot and table. Plot has horizontal axis from 0 to 3 in increments of 1, labeled t, and vertical axis from 0 to 75 in increments of 5, labeled p. Plot shows the points left parenthesis 0 comma 0 right parenthesis, left parenthesis 1 comma 25 right parenthesis, left parenthesis 2 comma 50 right parenthesis, and left parenthesis 3 comma 75 right parenthesis. Two-column table has column Time in hours left parenthesis t right parenthesis showing values 0, 1, 2, 3 and column Number of people left parenthesis p right parenthesis showing values 0, 25, 50, 75.

What is an equation showing the relationship between p and t?

Enter your answer by filling in the box to complete the equation.

p =