You sign up for karate classes. The classes cost

$

8

0

$80 per month.

Write an equation for the number of dollars,

d

d, that you pay for your karate classes if you take classes for

m

m months.

Complete the table for the missing values of

d

d.

m

m

d

d

1

1

8

0

80

2

2

3

3

4

4

3

2

0

320

d=80m

Step-by-step explanation:

The classes cost $80. So when you start with 0 classes you have spent $0. But each month you add $80.

1 ... $80

2 ... $80+80

3 ... $80+80+80

So the dollars you spend is calculated by multiplying the rate $80 by the number of months m. The equation is d=80m.