Question

enter the number of weeks of energy saved by recycling 400 cans.
cans recycled: 100, 200, 300, 400
energy saved (weeks): 2, 4, 6, blank

Explanation:

Step1: Identify the pattern

Looking at the table, when cans recycled increase by 100 (from 100 to 200, 200 to 300), energy saved increases by 2 weeks. So the rate is 2 weeks per 100 cans.

Step2: Calculate for 400 cans

For 400 cans, since 400 is 4 times 100, energy saved is \( 2\times4 = 8 \) weeks.

Answer:

8