In order to find how many additional workers are needed to staff the extra crews you first need to calculate how many workers are on a crew. There are 12 workers at the company now and that's enough to staff 4 crews so there are \( \frac{12}{4} \) = 3 workers on a crew. 8 crews are needed for the busy season which, at 3 workers per crew, means that the roofing company will need 8 x 3 = 24 total workers to staff the crews during the busy season. The company already employs 12 workers so they need to add 24 - 12 = 12 new staff for the busy season.

To simplify a radical, factor out the perfect squares:

\( \sqrt{48} \)
\( \sqrt{16 \times 3} \)
\( \sqrt{4^2 \times 3} \)
4\( \sqrt{3} \)

To divide terms with radicals, divide the coefficients and radicands separately:

\( \frac{14\sqrt{18}}{7\sqrt{9}} \)
\( \frac{14}{7} \) \( \sqrt{\frac{18}{9}} \)
2 \( \sqrt{2} \)

41% of the water consumption is industrial use and 12% is personal use so (41% - 12%) = 29% more water is used for industrial purposes. 20,000 gallons are consumed daily so industry consumes \( \frac{29}{100} \) x 20,000 gallons = 5,800 gallons.

A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.