Page 681 - Algebra 1

Lesson Practice
1.
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3.
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*4.
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*8.
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9.
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2. (x - 13)(x + 22) = 0
Solve each equation. a. _6=_7
_x x-1
(Ex 1)
8
x + 4 (98)
2 _x b. =
(Ex 1) x + 4 6
c. _12+_16=5
(Ex 2) 2
_x 4x
(Ex 4)
f.
(Ex 5)
__
x + 4 2x + 8
Lawn Care It takes John 2 hours to mow the yard. Sarah can do it in 3 hours. How long will it take them if they mow the yard together?
4 _2 _1
d. -= (Ex 3) x - 2 x
3x e. x+5= x-2
Practice
Solve. _
Distributed and Integrated
_4 = x
Physics A student is biking to a friend’s house. He bikes at 10 miles per hour. The friend lives 20 miles away, give or take 2 miles. What are the minimum and maximum times it will take him to get there?
2
6. Factorx+4x -5.
(75)
Verify Without graphing, show that the point (2, -6) lies on the graph of y=x +x-12.
4x 2__
4x-16 . ___
Simplify: 12x-60
9x - 20 - x2
+
1
-2
Larry weighed 180 pounds. He has lost 2 pounds a month for x months. Write a linear equation to model his weight after 8 months.
Write What is an extraneous solution? ___
Find the LCD of 2x - 12 . 2x2 -72 x2 +13x+42
666
Saxon Algebra 1
Population The function y = -0.0003x2 + 0.03x + 1.3 shows the population of Philadelphia County between the years 1900 and 1990, where x is the number of years after 1900 and y is the population for that year in millions of people. Find the vertex of the parabola that represents the function. What does it represent in terms of the scenario?