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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.

By buying two shirts, Ezra will save $29 x \( \frac{20}{100} \) = \( \frac{$29 x 20}{100} \) = \( \frac{$580}{100} \) = $5.80 on the second shirt.

The equation for this sequence is:

a_n = a_n-1 + 2

where n is the term's order in the sequence, a_n is the value of the term, and a_n-1 is the value of the term before a_n. This makes the next number:

a₆ = a₅ + 2
a₆ = 9 + 2
a₆ = 11

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

6\( \sqrt{8} \) x 8\( \sqrt{4} \)
(6 x 8)\( \sqrt{8 \times 4} \)
48\( \sqrt{32} \)

Now we need to simplify the radical:

48\( \sqrt{32} \)
48\( \sqrt{2 \times 16} \)
48\( \sqrt{2 \times 4^2} \)
(48)(4)\( \sqrt{2} \)
192\( \sqrt{2} \)