Page 100 - Algebra 1

26. Error Analysis Student A and Student B each solved the absolute-value problem as (5) shown below. Which student is correct? Explain the error.
*27. Find the value of y for the given values of x in the equation x -⎪x - 2⎥ = y (6) if x=-3.
28. Verify When simplified, will the expression 3 + _2 + |-5| be positive or negative? (7) Explain. 3
29. Probability Thomas spun a game spinner and recorded the results in the table below. (Inv 1)
Use the table to find the experimental probability of each event. Express each probability as a fraction and as a percent.
a. landing on red
b. landing on green
c. not landing on green
30. Geometry What is the perimeter of a square with an area of 121 sq. in.? (13)
x xx x
Student A
-|12 - 15| = -|-3| = -(3)
= -3
Student B
-|12 - 15| = -|-3| = |+3|
=3
Outcome
Frequency
Red
3
Blue
5
Yellow
9
Green
8
Area = 121 in2
Lesson 15 85