Explanations 
Textbooks 
Flashcards 
91影视 AI 
Notes 
Study Plans 
Study Sets 
Find a degree 
Magazine Problem 8
Find the percent of change. Round to the nearest tenth, if necessary. Then state whether the percent of change is a percent of increase or a percent of decrease. from \(\$ 10\) to \(\$ 27\)
Problem 8
Solve each proportion. $$\frac{4}{10}=\frac{8}{a}$$
Problem 8
Express each rate as a unit rate. Round to the nearest tenth, if necessary. 254.1 miles on 10.5 gallons
Problem 9
On a set of architectural drawings for a new school, the scale is \(\frac{1}{2}\) inch \(=\) 9 feet. Find the actual length of each room. $$\begin{array}{|l|c|}\hline \quad \quad \quad \text { Room } & \text { Drawing Distance } \\ \hline \text { Library } & 4.1 \text { inches } \\\\\hline\end{array}$$
Problem 9
Solve each proportion. $$\frac{18}{12}=\frac{24}{q}$$
Problem 9
Express each decimal or fraction as a percent. Round to the nearest tenth, if necessary. $$\frac{1}{4}$$
Problem 9
Find the percent of change. Round to the nearest tenth, if necessary. Then state whether the percent of change is a percent of increase or a percent of decrease. from 365 ft to \(421 \mathrm{ft}\)
Problem 9
Determine whether the set of numbers in each table are proportional. $$\begin{array}{|l|c|c|c|c|}\hline \text { Jars } & 3 & 9 & 12 & 15 \\\\\hline \text { Jelly beans } & 18 & 36 & 54 & 72 \\ \hline\end{array}$$
Problem 9
Identify each sample as biased or unbiased and describe its type. Explain your reasoning. To determine whether a candidate for governor is popular with the voters, \(30 \%\) of citizens in each of the 254 counties are surveyed.
Problem 9
Fifty-four of the 90 books on a shelf are history books. What percent of the books are history books?
