Question

teddy is preparing to sell some wooden blocks at a garage sale. before pricing individual bags of blocks, he decides to determine the approximate number of blocks per pound by researching the weights of different sets of blocks. the graph shows his data. about how many blocks are there per pound? round to the nearest block. 10 20 30 40

Explanation:

Step1: Identify the slope formula

The number of blocks per pound is the slope of the line, which is calculated as $\frac{\text{change in number of blocks}}{\text{change in weight (pounds)}}$.

Step2: Use two points on the line

From the graph, the line passes through (0, 0) and (5, 100). So the change in blocks is $100 - 0 = 100$, and the change in weight is $5 - 0 = 5$ pounds.

Step3: Calculate the slope

The slope (blocks per pound) is $\frac{100}{5}=20$.

Answer:

20 (corresponding to the option: 20)