91Ó°ÊÓ

Simplify. $$ 4^{3} $$

Solve. Write each answer in simplest form. For Exercises 81 through \(84,\) recall that "of," translates to multiplication. See Example 18. $$ \text { Find } \frac{1}{5} \text { of } 200 \text { . } $$

Translate each phrase into an algebraic expression. Use " \(x\) " to represent "a number." A number increased by \(-\frac{2}{5}\)

The Saltalamachios are planning to build a deck that measures \(4 \frac{1}{2}\) yards by \(6 \frac{1}{3}\) yards. Find the area of their proposed deck.

Write each improper fraction as a mixed number or a whole number. See Example 21. $$\frac{13}{7}$$

$$\text { Evaluate each expression if } x=\frac{3}{4} \text { and } y=-\frac{4}{7}$$ $$4 x+y$$

Translate each phrase into an algebraic expression. Use " \(x\) " to represent "a number." A number subtracted from \(-\frac{3}{8}\)

$$\text { Evaluate each expression if } x=\frac{3}{4} \text { and } y=-\frac{4}{7}$$ $$x^{2}+7 y$$

There are generally considered to be eight basic blood types. The table shows the number of people with the various blood types in a typical group of 100 blood donors. Use the table to answer. $$ \begin{array}{|l|c|} \hline {\text { Distribution of Blood Types in Blood Donors }} \\ \hline \text { Blood Type } & \text { Number of People } \\ \hline \text { O Rh-positive } & 37 \\ \hline \text { O Rh-negative } & 7 \\ \hline \text { A Rh-positive } & 36 \\ \hline \text { A Rh-negative } & 6 \\ \hline \text { B Rh-positive } & 9 \\ \hline \text { B Rh-negative } & 1 \\ \hline \text { AB Rh-positive } & 3 \\ \hline \text { AB Rh-negative } & 1 \\ \hline \text { (Source: American Red Cross Biomedical Services) } \\ \hline \end{array} $$ What fraction of blood donors have blood type \(A\) Rh-positive?

Solve. Write each answer in simplest form. For Exercises 81 through \(84,\) recall that "of," translates to multiplication. See Example 18. $$ \text { Find } \frac{5}{6} \text { of } 24 $$