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Determine whether the ratios form a proportion. $$\frac{9}{10}=\frac{8}{9}$$

In one game Peyton Manning completed 34 passes for 357 yd. At this rate how many yards would be gained for 22 passes?

Write each rate as a unit rate and round to the nearest hundredth when necessary. The ground dropped \(74.4 \mathrm{ft}\) in \(24 \mathrm{hr}\) in the famous Winter Park sinkhole of \(1981 .\) Find the unit rate representing the change in "altitude" per hour.

Write the ratio in lowest terms. \(75 \phi\) to \(100 \ \phi\)

Write the ratio in lowest terms. 18 in. to 36 in.

Write the ratio in lowest terms with whole numbers in the numerator and denominator. \(3.6 \mathrm{ft}\) to \(2.4 \mathrm{ft}\)

Write the ratio in lowest terms with whole numbers in the numerator and denominator. \(10.15 \mathrm{hr}\) to \(8.12 \mathrm{hr}\)

Approximately 24 out of 100 Americans over the age of 12 smoke. How many smokers would you expect in a group of 850 Americans over the age of \(12 ?\)

Laws have been instituted in Florida to help save the manatee. To establish the number in Florida, a sample of 150 manatees was marked and let free. A new sample was taken and found that there were 3 marked manatees out of 40 captured. What is the approximate population of manatees in Florida?

Write each rate as a unit rate and round to the nearest hundredth when necessary. One Weight Watchers group lost 123 Ib for its 11 members.