Page 425 - Algebra 1

*9. Error Analysis Students were asked to find the product (2n - 5)2 using the square of (60) a binomial pattern. Which student is correct? Explain the error.
10. Analyze The solution to a system of equations is (4, 6). One equation in the (59) system is 2x + y = 14. One term in the other equation is 3x. What could the
equation be?
11. Multiple Choice Which system of equations has a solution (59) of (2, -2)?
Student A
(2n - 5)2
= (2n)2 - 2(2n)(5) + (5)2 =4n2 -20n+25
Student B
(2n - 5)2
= (2n)2 - 52 =4n2 -25
12.
(58)
14.
(60)
15.
(47)
*16.
(62)
-4(x2 +4x-1) (x+_1)(x+_1)
B 5x - 3y = 16 4x + 9y = 10
D x + 2y = -2 2x + y = -2
13. (b-8)2 (60)
Consumer Math Consumers spend $95 million on Father’s Day cards and $152 million on Mother’s Day cards. What is the amount of increase or decrease from Mother’s Day to Father’s Day cards? What percentage of the combined total do consumers spend on Mother’s Day cards?
Geometry The stem-and-leaf plot shows the diameters of a shipment of bicycle tires to a bicycle shop. Find the circumference of the tire with the median diameter in the data set. Use 3.14 for pi.
Diameters of Bicycle Tires
Stem Leaves
1 5, 5, 6, 7, 7, 8, 9, 9
2 0, 0, 0, 1, 2, 2, 4
Key: 1 5 means 15 inches
Solve the following system by graphing: y = x + 6
y + 3x = 6.
Write Explain what the whiskers in a box-and-whisker plot represent.
Fundraising The amount of money raised for a charity event by the homerooms at
Jefferson High School are shown below. Create a stem-and-leaf plot of the data. $150, $125, $134, $129, $106, $157, $108, $135, $144, $149
A x + y = 0
2x - 3y = -2
C 9x - 2y = 22 3x + 6y = -6
Multiply.
24
17.
(55)
18.
(54)
*19.
(62)
410
Saxon Algebra 1