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In a recent year, wind machines in the United States generated 17.8 billion kilowatt-hours of electricity, enough to serve over 1.6 million households. The nation's total electricity production that year was 4450 billion kilowatt- hours. (Source: Energy Information Administration) What percent of the total energy production was generated by wind machines?

Write as a percent. $$0.07$$

A pre-election survey showed that 2 out of every 3 eligible voters would cast ballots in the county election. There are \(240,000\) eligible voters in the county. How many people are expected to vote in the election?

A TurboTax online survey asked people how they planned to use their tax refunds. Seven hundred forty people, or \(22 \%\) of the respondents, said they would save the money. How many people responded to the survey?

Write as a percent. If necessary, round to the nearest tenth of a percent. $$\frac{27}{50}$$

Write as a percent. If necessary, round to the nearest tenth of a percent. $$\frac{83}{100}$$

The scale on a map is \(\frac{1}{2}\) in. equals 8 mi. What is the actual distance between two points that are \(1 \frac{1}{4}\) in. apart on the map?

For \(\frac{1}{4} \%\), the percent ratio is the ratio \(\frac{\frac{1}{4}}{100}\). Which of the following fractions is equivalent to this ratio? (i) \(\frac{1}{25}\) (ii) \(\frac{1}{400}\) (iii) \(\frac{25}{1}\)

Write as a percent. If necessary, round to the nearest tenth of a percent. $$\frac{37}{200}$$

A slow-burning candle will burn 1.5 in. in 40 min. How many inches will the candle burn in 4 h?