Final answer:
The question is about comparing the cost of grapefruit juice at two stores using linear equations and a graph. Store A's price is represented by the equation y = 1.6x, and for store B, the relationship is shown in a graph. To compare, the slope of the graph for store B should be analyzed and compared to the rate from store A.
Step-by-step explanation:
The question involves understanding linear equations and how they represent cost in relation to quantity. Let's clarify the equation given for store A, which appears to be a typo: it should be y = 1.6x, where y is the total cost of x bottles of grapefruit juice. The cost per bottle at store A is $1.60 since the coefficient of x in the equation is the rate. For store B, we are missing the explicit equation, but we have a graph that shows the relationship between the number of bottles purchased and the total cost. To compare the prices at store A and store B, we would need to analyze the graph for store B, locate the slope, and compare it to the rate for store A. If the slope of the graph for store B is less than 1.6, then each bottle of grapefruit juice is cheaper at store B compared to store A.