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If the tiger has consumed 90 pounds of food in 9 days that's \( \frac{90}{9} \) = 10 pounds of food per day. The tiger needs to consume 150 - 90 = 60 more pounds of food to reach 150 pounds total. At 10 pounds of food per day that's \( \frac{60}{10} \) = 6 more days.

If 31% of the town's 16,000 voters cast ballots the number of votes cast is:

(\( \frac{31}{100} \)) x 16,000 = \( \frac{496,000}{100} \) = 4,960

The mayor got 74% of the votes cast which is:

(\( \frac{74}{100} \)) x 4,960 = \( \frac{367,040}{100} \) = 3,670 votes.

A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.

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 6 workers at the company now and that's enough to staff 3 crews so there are \( \frac{6}{3} \) = 2 workers on a crew. 8 crews are needed for the busy season which, at 2 workers per crew, means that the roofing company will need 8 x 2 = 16 total workers to staff the crews during the busy season. The company already employs 6 workers so they need to add 16 - 6 = 10 new staff for the busy season.