App Alg 2 Chapter 1 Review: Equations, Evaluating Expressions, Histograms

Writing Algebraic Expressions

100

Write an expression for the product of 3 and w.

3w

200

Write an expression for w less than 8.

8-w

300

Write an expression for the difference of twice p and 9.

2p-9

400

Twice the difference of 6 and x

2(6-x)

500

Write an expression for the 9 times the difference of r and 8.

9(r-8)

Solving Equations

100

Solve for y:

20-14y=-22

y=3

200

Solve for x:

(8-6x)/4=-10

x=8

300

Solve for r:

6.5+4r-9.4-2r=23.4

r=13.15

400

Solve for w:

7(3w-3)=2(3w+12)

w=3

500

Solve for x:

(5/3x)+(5/6)=(7/2x)-(9/6)

x=1.27

Evaluating Expressions

100

Evaluate when p = 6;

2p+7

19

200

Evaluate when g = 3;

31-5g

16

300

Evaluate when w = 13;

4w-18

34

400

Evaluate when z = 5 and r = 2;

2rz-9

11

500

Evaluate when x = 0.25 and w =7;

12x+8xw

17

Means, Medians, Modes and Ranges

100

Find the range and median for the set of data:

12, 5, 9, 2, 2, 11, 19, 21, 25

Range: 23

Median: 11

200

Find the mean and mode for the set of data:

34, 23, 41, 45, 27, 33, 23, 44, 23

Mean: 32.6

Mode: 23

300

Find the median and range for the set of data:

34, 23, 41, 45, 27, 33, 23, 44, 23

Median: 33

Range: 22

400

Find the mean and mode for the set of data:

12, 5, 9, 2, 2, 11, 19, 21, 25

Mean: 11.8

Mode: 2

500

Find the range, mode and median for the set of data:

13, 4, 8, 28, 9, 5, 5, 12, 10, 22, 21, 17

Range: 24

Mode: 5

Median: 11

Histograms

100

How many trees had a height between 150cm and 250cm?

About 56

200

What range of petal lengths is the mode?

1-1.5cm

300

What is the difference in trees between the largest and smallest height groups?

About 7

400

How many petals were 5cm or larger?

About 50

500

Is someone buys a flower, are they more likely to get one with short petals or long petals?

Long petals are more common