For delivery orders, customers must order at least two dozen donuts. The first two dozen donuts cost $6.99 each. Any additional donuts ordered cost $5.99 per dozen.
If x represents the number of additional dozens of donuts, which of the following equations can be used to find the cost of the order, not including tax or a delivery charge?
A.
y = 13.98x + 5.99
B.
y = 5.99x + 13.98
C.
y = 5.99x + 6.99
D.
y = 6.99x + 5.99
The correct equation to find the cost of the order, not including tax or a delivery charge, is:
y = 6.99 + 5.99x
This is because the first two dozen donuts cost $6.99 each, and any additional donuts ordered cost $5.99 per dozen. The cost of the first two dozen donuts is a fixed cost of $6.99, and the cost of additional dozens is given by multiplying the number of additional dozens (x) by $5.99. Therefore, the equation is y = 6.99 + 5.99x.
Therefore, the correct answer is D. y = 6.99x + 5.99.