The distance a spring will stretch varies directly with how much weight is attached to the spring. If a spring stretches 9 inches with 100 pounds attached, how far will it stretch with 90 pounds attached? Round to the nearest tenth of an inch.
HELP please (:

Question

The distance a spring will stretch varies directly with how much weight is attached to the spring. If a spring stretches 9 inches with 100 pounds attached, how far will it stretch with 90 pounds attached? Round to the nearest tenth of an inch. 
HELP please (:

anonymous · Answer

let x for how far$$\frac{9}{100}=\frac{x}{90}$$
coss and time
9*90=100x
x=810\100
x=81

anonymous · Answer

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anonymous · Answer

thanks boo, your awsome (: