Intermediate Algebra (11th edition)

Solve each equation. See Section 2.1. For each rational function, find all numbers that are not in the domain. Then ...

7.4 Equations with Rational Expressions and Graphs Solving an Equation with Rational Expressions Step 1 Determine the domain of ...

Step 3 Distributive property Multiply. Distributive property Combine like terms. Subtract 15. Proposed solution Divide by Step 4 ...

Solving a Rational Equation Solve Multiply. Standard form Factor. or Zero-factor property or Proposed solutions Because is not i ...

390 CHAPTER 7 Rational Expressions and Functions NOTE In general, if the y-values of a rational function approach or as the x-va ...

SECTION 7.4 Equations with Rational Expressions and Graphs 391 Complete solution available on the Video Resources on DVD 7.4 EXE ...

Solve each equation. See Examples 2 – 5. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. ...

Solve each problem. 55.The average number of vehicles waiting in line to enter a parking area is modeled by the function defined ...

EXERCISES 59 – 60 Two views of the graph of are shown. Use the graphs to respond to Exercises 59 and 60. See the Connections box ...

SUMMARY EXERCISES on Rational Expressions and Equations Identify each exercise as an equationor an expression. Then simplify the ...

396 CHAPTER 7 Rational Expressions and Functions OBJECTIVES Applications of Rational Expressions 7.5 1 Find the value of an unkn ...

SECTION 7.5 Applications of Rational Expressions 397 OBJECTIVE 3 Solve applications by using proportions.A ratiois a compar- iso ...

Solving a Proportion Involving Rates Jodie Fry’s car uses 10 gal of gasoline to travel 210 mi. She has 5 gal of gasoline in the ...

SECTION 7.5 Applications of Rational Expressions 399 Traveling withthe current speeds the boat up, so the rate of the boat is th ...

Express their times in terms of the known distances and the variable rates, as in Example 6.Cheryl travels 300 m at a rate of xm ...

SECTION 7.5 Applications of Rational Expressions 401 Part done part done 1 whole by Kareem by Letitia is job. 1 Multiply by the ...

7.A formula from anthropology says that . Find Lif and. 8.The gravitational force between two masses is given by . Find Mif , , ...

SECTION 7.5 Applications of Rational Expressions 403 Solve each formula for the specified variable. See Examples 2 and 3. for G ...

31.On a world globe, the distance between New York and Cairo, two cities that are actually 5619 mi apart, is 8.5 in. On this sam ...

SECTION 7.5 Applications of Rational Expressions 405 42.Suppose the following triangles are similar. Find yand the lengths of th ...