Algebra

Words To Algebra

100

The cost of m books at $10 each

10m or m x 10

200

A number (x) divided by 6 and add 13

x/6 + 13

300

The cost of a taxi trip is $4.10 plus $2.30 for y kilometres travelled

4.1 + 2.3y

400

Perimeter of a rectangle of length x cm and width y cm

2x + 2y

500

Printing a poster costs $15 plus $0.08 per copy. What is the cost C printing n copies

C = 15 + 0.08n

Adding, Subtracting, Multiplying and Dividing Terms

100

w - 12 + w

2w - 12

200

20m - m 

19m

300

p² + 4p² + p

p + 5p²

400

a³ x 2a³

2a⁶

500

24x⁸ / 6x⁴

4x⁴

Expanding Expressions

100

-(8 - y)

y - 8

200

−4 (y + 3)

−4y − 12

300

6(2m − 7)

12m − 42

400

5(3p + 5) + 2

15p + 27

500

5x (2x + 3)

10x² + 15x

Substitution

100

Evaluate expression for t=6:

C = 4t − 10

14

200

Evaluate expression for x=2:

y = 3x + 5

11

300

Evaluate expression for m=5:

n = 2m − 7

3

400

Evaluate expression for c=0:

F = 9c + 32

32

500

Evaluate expression for x=−3:
y = 2x² + 5x - 4

5

Solving Equations

100

k + 6 = 13

7

200

8k - 10 = 42

6.5

300

a/8 - 2 = -6

-32

400

The monthly cost of a phone plan is:

C=30+0.25t

C is the total cost and t is the number of text messages.

Calculate the total cost if 40 texts are sent.

$40

500

The cost of hiring a kayak is given by C=25+8h, where h is the number of hours.
If the total cost was $73, how long was it hired for?

6 hours