If 45% of the town's 10,000 voters cast ballots the number of votes cast is:

(\( \frac{45}{100} \)) x 10,000 = \( \frac{450,000}{100} \) = 4,500

The mayor got 90% of the votes cast which is:

(\( \frac{90}{100} \)) x 4,500 = \( \frac{405,000}{100} \) = 4,050 votes.

Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):

2 + (2 + 2) ÷ 3 x 4 - 2²
P: 2 + (4) ÷ 3 x 4 - 2²
E: 2 + 4 ÷ 3 x 4 - 4
MD: 2 + \( \frac{4}{3} \) x 4 - 4
MD: 2 + \( \frac{16}{3} \) - 4
AS: \( \frac{6}{3} \) + \( \frac{16}{3} \) - 4
AS: \( \frac{22}{3} \) - 4
AS: \( \frac{22 - 12}{3} \)
\( \frac{10}{3} \)
3\(\frac{1}{3}\)

A ratio of 4:1 means that there are 4 home fans for every one visiting fan. So, of every 5 fans, 4 are home fans and \( \frac{4}{5} \) of every fan in the stadium is a home fan:

50,000 fans x \( \frac{4}{5} \) = \( \frac{200000}{5} \) = 40,000 fans.

To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so subtract the coefficients and retain the base and exponent:

-6c⁵ - 5c⁵
(-6 - 5)c⁵
-11c⁵

By buying two shirts, Monty will save $33 x \( \frac{5}{100} \) = \( \frac{$33 x 5}{100} \) = \( \frac{$165}{100} \) = $1.65 on the second shirt.