Question

calla uses 2 pounds of feed - all fertilizer for a 100 - foot row of vegetables at her farm. at this rate, how many pounds of fertilizer would she use for a 450 - foot row of vegetables? explain.

Explanation:

Step1: Find the rate of fertilizer per foot

The rate is found by dividing the amount of fertilizer by the length of the row. For a 100 - foot row, 2 pounds of fertilizer are used. So the rate $r$ is $r=\frac{2}{100}=0.02$ pounds per foot.

Step2: Calculate fertilizer for 450 - foot row

Multiply the rate per foot by the length of the 450 - foot row. Let $F$ be the amount of fertilizer for a 450 - foot row. Then $F = 0.02\times450 = 9$ pounds.

Answer:

9 pounds