The price, in dollars, of one drink
The price, in dollars, of one salad
The number of drinks bought during the day
The number of salads bought during the day
Explanation
Correct answer: B.
Choice B is correct. It's given that is equal to the total amount of money, in dollars, a food truck charges for drinks and salads. Since each salad has the same price, it follows that the total charge for salads is dollars. When , the value of the expression is , or . Therefore, the price for one salad is dollars.
Desmos solution:
Note: The coefficient 7.00 is multiplied by y, the number of salads, so it represents the price per salad.
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice A
Choice A is incorrect. Since each drink has the same price, it follows that the total charge for drinks is dollars. Therefore, the price, in dollars, for one drink is , not .
Choice C
Choice C is incorrect. In the given equation, represents the total charge, in dollars, when drinks and salads are bought at the food truck. No information is provided about the number of drinks or the number of salads that are bought during the day. Therefore, doesn't represent either of these quantities.
Choice D
Choice D is incorrect. In the given equation, represents the total charge, in dollars, when drinks and salads are bought at the food truck. No information is provided about the number of drinks or the number of salads that are bought during the day. Therefore, doesn't represent either of these quantities.