Final answer:
To find the number of hours spent tubing at Perfect North Ski Slopes given the total cost of $45, you can use the equation y = 8 + 4x, where y represents the total cost and x represents the number of hours. By substituting the total cost of $45 into the equation, you can solve for x and find that the number of hours spent tubing is 9.25 hours.
Step-by-step explanation:
To write an equation to represent this situation, let's assign the variable x to represent the number of hours you spent tubing. The cost of the tubing pass is $8 and each hour of tubing costs an additional $4, so the equation for the total cost, y, would be y = 8 + 4x.
To find the number of hours you spent tubing, we can substitute the total cost of $45 into the equation and solve for x. 45 = 8 + 4x. Subtract 8 from both sides to isolate 4x. 45 - 8 = 4x. Simplify. 37 = 4x. Divide both sides by 4 to solve for x. x = 37/4. Therefore, the number of hours you spent tubing is 37/4 or 9.25 hours.\