Page 551 - Algebra 1

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Measurement To find the values of x for which the triangle
would have a perimeter of more than 81 units, solve the inequality x + (x + 13) + (2x + 12) > 81.
x
x + 13
2x + 12 _a
+ c?
Two number cubes are rolled and their values are added. One number cube is labeled 1–6. The other has two of each of the numbers 1, 2, and 3. The possible outcomes are displayed in the table.
What is the theoretical probability of each possible sum?
Cube 1
Write How do changes to the value of b affect the graph of y =
x-b
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Multi_ple Choice What is the horizontal asymptote for the rational expression 7
y= x-2 +4?
A y=-2 B y=4 C y=-4 D y=7
Football A football is kicked into the air. In the expression -5t2 + 25t - 30, t represents the time when the ball is 30 feet in the air. Factor the expression completely.
Error Analysis Two students factor 9m2x3 + 81mx3 + 126x3. Which student is correct? Explain the error.
Student A
9m2x3 + 81mx3 + 126x3 = 9x3(m2 + 9m + 14) = 9x3(m + 2)(m + 7)
Student B
9m2x3 + 81mx3 + 126x3 The GCF is 9x3.
Factor out 9x3.
m2 +9m+14
= (m + 2)(m + 7)
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Games Two number cubes are rolled and their values are added. Find the probability that the sum is less than or equal to 7.
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Saxon Algebra 1
Cube 2