![Page 1: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/1.jpg)
Lesson 2-5Literal Equations and Formulas
September 4, 2014
![Page 2: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/2.jpg)
Daily Learning Target
• I will rewrite and use literal equations and formulas.
![Page 3: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/3.jpg)
Key Vocab.
• Literal equation: an equation that involves two or more variables.
![Page 4: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/4.jpg)
Solve It
• You are ordering pizzas and sandwiches. You have a budget of $80. How many sandwiches can you buy if you buy 4 pizzas?
What if you buy 5 pizzas?
What if you buy 8 sandwiches?
![Page 5: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/5.jpg)
Example 1
10x + 5y = 80
Solve for y
Answer: y = 16 – 2x
![Page 6: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/6.jpg)
Example 2
Solve for x: ax – bx = c
Answer: x =
![Page 7: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/7.jpg)
Example 3
• What is the radius of a circle with a circumference of 64 ft? Round to the nearest tenth. Use 3.14 for p.
Use the appropriate formula: C = 2pr
Answer: r ≈ 10.2 ft.
![Page 8: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/8.jpg)
Example 4
• The monarch butterfly is the only butterfly that migrates annually north and south. The distance a particular group of monarch butterflies is 1700 from Indiana to Mexico. It takes a typical butterfly about 120 days to travel one way. What is the average rate at which a butterfly travels in miles per day? Round to the nearest mile per day.
Answer: r ≈ 14 miles per day
![Page 9: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/9.jpg)
Try It
• This is what you will see on your homework1) 3x – 5y = p; x = -1, 0, 1
2) mx + nx = p; Solve for x.
![Page 10: Lesson 2-5 Literal Equations and Formulas September 4, 2014](https://reader036.vdocument.in/reader036/viewer/2022082711/56649ebb5503460f94bc30a3/html5/thumbnails/10.jpg)
Homework
• Workbook page 55• Problems: 1, 3, 8, 10, 12, 16, 18
• Page 57• Problems: 1 – 6 ALL