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:

third option: 6x+8

step-by-step explanation:

we can see that the given question is a sum of series and the values of n vary from 0 to 3

the first term will be:

when n=0, [(0)*x+2] => (0+2) => 2

when n=1, [(1)*x+2] => (x+2) => x+2

when n=2, [(2)*x+2] => 2x+2

when n=4, [(3)*x+2] => 3x+2

so adding up all the terms will give us:

=2+x+2+2x+2+3x+2

=x+2x+3x+2+2+2+2

=6x+8

so,

third option is the correct answer ..

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.