Sita rented a canoe. The equation y=15x−25 represents the cost in dollars, y, of renting the canoe for x hours. Select all of the true statements.
a) The initial cost of renting the canoe is $25.
b) The cost increases by $15 for each additional hour.
c) The cost decreases by $25 for each additional hour.
d) The slope of the line is 15.