Question in-the
In the equation above, F represents the total amount of money, in dollars, a food truck charges for x drinks and y salads. The price, in dollars, of each drink is the same, and the price, in dollars, of each salad is the same. Which of the following is the best interpretation for the number 7.00 in this context?
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
In the equation above, F represents the total amount of money, in dollars, a food truck
Medium-difficulty · SAT Math · Linear Equations in Two Variables — Intercepts and slope applications. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice B is correct. It’s given that 
is equal to the total amount of money, in dollars, a food truck charges for x drinks and y salads. Since each salad has the same price, it follows that the total charge for y salads is 
dollars. When 
, the value of the expression is 
, or 7.00. Therefore, the price for one salad is 7.00 dollars.
Choice A is incorrect. Since each drink has the same price, it follows that the total charge for x drinks is 
dollars. Therefore, the price, in dollars, for one drink is 2.50, not 7.00. Choices C and D are incorrect. In the given equation, F represents the total charge, in dollars, when x drinks and y 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, 7.00 doesn’t represent either of these quantities.
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