Math Exam Review

Linear equations

100

Solve:3x=27

x=9

200

Solve: 5x−4=21

x=5

300

Solve: 4(x+2)=40

x=8

400

Solve: 7x+3=4x+24

x=7

500

Solve: 6(x−5)=3x+9

x=13

Functions

100

If f(x)=x+6, what is f(4)?

10

200

Is the relation (2,3),(2,5),(4,7) a function?

No (x = 2 has two outputs)

300

Identify the slope in y=−3x+8.

−3

400

A function has slope 2 and passes through (1, 5). Write its equation.

y=2x+3

500

Is the relation (1,4),(2,6),(3,8),(3,9) a function?

No — the input 3 has two different outputs.

Geometry

100

Sum of angles in a triangle?

180°

200

Area of a rectangle with length 12 and width 7?

84

300

Volume of a rectangular prism: 4×3×5.

60

400

A triangle has angles 40° and 75°. What is the third angle?

65°

500

A cylinder has radius 3 and height 10. What is its volume?

90π

Exponents & Scientific Notation

100

Simplify: 2^3.

8

200

Write 5,600 in scientific notation.

5.6×10³

300

Simplify: 3² x 3⁴.

3⁶

400

Which is larger: 4.2×105 or 3.9×106?

3.9×10⁶

500

Convert 9.3×10−4 to a decimal.

0.00093

Systems of Equations

100

Solve by inspection: x+y=10  x=6

y=4

200

Solve: x+y=12  x−y=4

x=8, y=4

300

Solve: 2x+y=11  x−y=1

x=4, y=3

400

Solve: 3x−2y=7  x+y=5

x=3, y=2

500

Solve: 4x+3y=22  2x−y=1

x=3, y=2