2. The strength of a beam varies inversely with the square of its length. If a

10

-foot beam can support

400

pounds, how many pounds can an

11

-foot beam support? Round the answer to the nearest pound.

An

11

-foot beam can support

pounds.

3. You saved

$220

on your new laptop because you bought it online. If this was a

5%

savings from the original price, find the original cost of the laptop.

The original cost of the laptop was $ .