Algebra TEXAS StyleA2warmup21 Algebra 2 Warm-up 21

Algebra TEXAS StyleA2warmup21

Algebra 2

Warm-up 21


1. Which of the following would not be an effective process to solve this system of equations?

3x + 2y = -1

x + 3y = -5

A. Combine the first equation with –3 times the 2nd equation.

B. Solve the second equation for x and substitute into the first equation.

C.Combine the first equation with the second equation.

D.Multiply the 2nd equation by 3 and subtract the resulting equation from the first equation.


2. What is the solution to the system shown in the tables below?

A. (-3,-9)

B. (-6,-7)

C. (-12,-10)

D. (0,-11)

x y

-12 -10

-10 -9

-8 -8

-6 -7

-4 -6

x y

-9 -5

-6 -7

-3 -9

0 -11

3 -13


3. What is the solution to the system shown in the tables below?

A. (-7,2)

B. (1,10)

C. (-3,4)

D. (9,21)

x y

-1 -1

1 -6

3 -11

5 -16

7 -21

x y

-7 2

-5 1

-3 4

-1 7

1 10


4. Bill is a waiter at Granny’s Kitchen. He earns $4 per hour plus tips. On most Saturday evening shifts he serves an average of 10 tables per hour. During last Saturday evenings 4-hour shift, he earned $118. What is the mean tip per table?

A. $2.55

B. $2.85

C.$7.80

D.$10.20


5. A paperweight is a snow globe in the shape of a cube of side length 3 in. It contains a solid sphere with a diameter of 2 in. What is the approximate volume of liquid that the snow globe contains?

A. 6.5 in3

B. 22.8 in3

C.24.9 in3

D.3.1 in3


6. A circle is cut from the center of a larger cardboard circle. As the size of the center circle increases, the remaining area decreases.

x x x

Small circle r = 1 Small circle r = 3Small circle r = 2

Continuing this pattern, what is the difference between the remaining area of the 2nd circle and the 5th circle?

A. 3π

B. 6π

C.21π

D.23π


7. Compare and contrast the graphs of and .

2

2

1xy 32 2 xy

22

22

22

22

2

1332.

.2

1332.

.2

132.

.2

132.

xyofgraphthethanlowerunitsisxyofgraphTheD

xyofgraphtheofrightthetounitsisxyofgraphTheC

xyofgraphthethannarrowerisxyofgraphTheB

xyofgraphthethanwiderisxyofgraphTheA


8. Jill, Michelle, Sandy and Rhonda went shopping. Jill spent $10 more than Michelle. Michelle spent twice as much as Sandy. Sandy spent $5 less than Rhonda. They spent a total of $135. How much did Michelle spend?


9. Roger has an soft serve ice cream stand. He serves only 4 flavors, vanilla, chocolate, strawberry, and butter pecan. He recorded the sales from this past weekend. Vanilla – 21, chocolate – 19, strawberry – 8, and butter pecan – 12. If Roger puts this data in a circle graph, what is the number of degrees needed for the sector representing chocolate?

A. 114°

B. 31.7°

C.52.8°

D.136.8°


10.Juanita is in a college class. The final grade consists of 60% of the mean of 3 tests and 40% of the final exam. Her 3 test grades are 96, 85, and 83. What must she make on the final exam to have at least a 90 average?



A2Warm-up 21

# Ans Obj TEKS

1 C 10 8.15A

2 B 4 A.8B

3 C 4 A.8B

4 A 10 8.14A

5 B 10 8.14C

6 C 10 8.14B

7 B 5 A.9B

8 40 10 8.14C

9 A 9 8.12C

10 93 9 8.12A

Documents

Algebra TEXAS StyleA2warmup21 Algebra 2 Warm-up 21