Concept explainers
Best estimate for the cost per pound, based on relationship between the weight in pounds of chocolate covered almonds and their cost as given in the graph.
Answer to Problem 56PFA
Best estimate for the cost per pound is $7.80 or option D is correct answer.
Explanation of Solution
Given information: The following graph shows the relationship between the weight in pounds of chocolate covered almonds and their cost.
Formula/Concept used: Rate per pound is actually the slope of the line that will be formed on joining these given dots. And slope of a line, from any two points, is calculated using the formula:
Unit rate = Slope of the line
Calculation: In given graph, two points shown can be considered as
Conclusion: So, as unit rate is 8, so cost per pound is $8. And in given options, the closest value to 8 is $7.80 that is the required estimated rate per pound.
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