Write an equation for the number of dollars, d, that you pay for your karate classes if you take classes for m months

The equation is :

Step-by-step explanation:

Given table is :

m      d

1        80

2       160

3        240

4        320

We can see that the difference is common for all months.

The cost(d) of 1 month is $80.

So, cost for m months will be = 80m

Therefore, the equation for the number of dollars,d, that you pay for your karate classes if you take classes for m months is:

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13