91Ó°ÊÓ

Order the ratios from least to greatest.

$2\text{ â¶Ä‰â¶Ä‰}to\text{ â¶Ä‰}9,\text{ â¶Ä‰}1:7,\text{ â¶Ä‰}\frac{7}{28},\text{ â¶Ä‰}2\text{ â¶Ä‰}to\text{ â¶Ä‰}6,\text{ â¶Ä‰}\frac{3}{10}$

Write the fraction in simplest form. (p. 184)

$\frac{42}{144}$

Error Analysis Describe and correct the error in writing a proportion to find the cost of 30 pencils if 12 pencils cost $2.00.

Use algebra to solve the proportion.

$\frac{x}{4}=\frac{13}{2}$

Pizza You know that 3 pizzas are enough to feed 12 people. Write and solve a proportion to find the number of pizzas that will feed 28 people.

Order the ratios from least to greatest.

$1\text{ â¶Ä‰â¶Ä‰to â¶Ä‰}3,\text{ â¶Ä‰}\frac{2}{8},\text{ â¶Ä‰â¶Ä‰}5:18,\text{ â¶Ä‰}7\text{ â¶Ä‰to â¶Ä‰}20,\text{ â¶Ä‰}\frac{9}{25}$

Write the fraction in simplest form.

$\frac{14x^2{y}^3}{35x{y}^2}$

Use the information given on page 285 to determine how much food a 12,500 pounds elephant eats per day.

Use equivalent ratios to solve the proportion.

$\text{ â¶Ä‰}\frac{5}{6}=\frac{x}{30}$

Write the fraction in simplest form.

$\frac{a^3{b}^2{c}^2}{b{c}^2}$