A. y = 20x + 3 (where y represents Rex's total cost and x represents the number of times he goes to the pool).
To show the work:
- Rex pays $20 for the membership, which is a fixed cost that doesn't change based on the number of times he goes to the pool. This can be represented by the constant term in the function rule, which is 20.
- Rex also pays $3.00 each time he goes to the pool, which is a variable cost that depends on the number of times he goes. This can be represented by the coefficient of x in the function rule, which is 3.
- Combining these, we get the function rule y = 20x + 3, which tells us Rex's total cost (y) based on the number of times he goes to the pool (x).
What is the function rule for the following situation? Rex paid $2o for a membership to the pool and pays $3.00 each time he goes to the pool. Show your work.
A. y = 20x + 3.
B. 20 = 3x +y.
C. y = x + 20.
D. None of these.
3 answers
y = 20 + 3x. seems like bot put the x on the fixed cost when it belongs on the variable cost. Theres no answer choice out of the ones listed that matches the equation, so D
You are correct that the equation should be y = 20 + 3x, and that Bot must have made an error in the function rule given. However, given that none of the answer choices match the correct function rule, it is indeed appropriate to choose answer choice D, which states that none of the given options are correct. Thank you for catching that mistake!