Mrs. Williams estimates that on average her family recycles 12.6 pounds of plastic each month. In a year's time, how much landfill space will Mrs. William's family save if 1 pound of plastic saves 7.4 yards of landfill space?

First find the plastic recycled in a year: 12.6 × 12 = 151.2 pounds. Each pound saves 7.4 yards of landfill space, so 151.2 × 7.4 = 1,118.88 yards. The family saves 1,118.88 yards in a year, which is choice C.

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