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 15 workers at the company now and that's enough to staff 5 crews so there are \( \frac{15}{5} \) = 3 workers on a crew. 10 crews are needed for the busy season which, at 3 workers per crew, means that the roofing company will need 10 x 3 = 30 total workers to staff the crews during the busy season. The company already employs 15 workers so they need to add 30 - 15 = 15 new staff for the busy season.

Jennifer scored 88% on the test meaning she earned 88% of the possible points on the test. There were 100 possible points on the test so she earned 100 x 0.88 = 88 points. Each question is worth 2 points so she got \( \frac{88}{2} \) = 44 questions right.

To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:

\( \sqrt{\frac{9}{25}} \)
\( \frac{\sqrt{9}}{\sqrt{25}} \)
\( \frac{\sqrt{3^2}}{\sqrt{5^2}} \)
\(\frac{3}{5}\)

A prime number is an integer greater than 1 that has no factors other than 1 and itself. Examples of prime numbers include 2, 3, 5, 7, and 11.

66% of the water consumption is industrial use and 33% is personal use so (66% - 33%) = 33% more water is used for industrial purposes. 5,000 gallons are consumed daily so industry consumes \( \frac{33}{100} \) x 5,000 gallons = 1,650 gallons.