(beginner level, picture provided) use the line of best fit to predict the total amount of money earned in tips after working 12 hours

Option C is correct

$120

Step-by-step explanation:

The equation of best line is given by:

         ....[1]

where, y represents the total amount of money earned in tip after x hours,  m is the slope and b is the y-intercept.

As per the statement:

From the graph:

Two points are:

(2, 20) and (8, 80)

Formula for slope(m) is given by:

then;

⇒m = 10

Substitute in [1] we have;

Also , substitute the point (2, 20) to find b;

⇒

Subtract 20 from both sides we have;

⇒0 = b

or

b = 0

Then, we get the equation:

We have to find total amount of money earned in tips after working 12 hours.

⇒x = 12 hours

then;

Therefore, the total amount of money earned in tips after working 12 hours is, $120

you need to show the graph

step-by-step explanation: