The factors of a number are all positive integers that divide evenly into the number. The factors of 20 are 1, 2, 4, 5, 10, 20.

The amount of flour you need is (2\(\frac{1}{2}\) - \(\frac{1}{8}\)) cups. Rewrite the quantities so they share a common denominator and subtract:

(\( \frac{20}{8} \) - \( \frac{1}{8} \)) cups
\( \frac{19}{8} \) cups
2\(\frac{3}{8}\) cups

If 76% of the town's 14,000 voters cast ballots the number of votes cast is:

(\( \frac{76}{100} \)) x 14,000 = \( \frac{1,064,000}{100} \) = 10,640

The mayor got 70% of the votes cast which is:

(\( \frac{70}{100} \)) x 10,640 = \( \frac{744,800}{100} \) = 7,448 votes.

To multiply fractions, multiply the numerators together and then multiply the denominators together:

\( \frac{3}{7} \) x \( \frac{3}{6} \) = \( \frac{3 x 3}{7 x 6} \) = \( \frac{9}{42} \) = \(\frac{3}{14}\)

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

5\( \sqrt{8} \) x 8\( \sqrt{5} \)
(5 x 8)\( \sqrt{8 \times 5} \)
40\( \sqrt{40} \)

Now we need to simplify the radical:

40\( \sqrt{40} \)
40\( \sqrt{10 \times 4} \)
40\( \sqrt{10 \times 2^2} \)
(40)(2)\( \sqrt{10} \)
80\( \sqrt{10} \)