The total cost should be around 19.20
Answer: y=-6/5x+3
Step-by-step explanation:
To find the equation of the line that passes through the points, you want to first find the slope by using the formula
, then solve for the y-intercept.

Now that we have the slope, we can plug in a given point and solve for the y-intercept.
15=-6/5(-10)+b [multiply]
15=12+b [subtract both sides by 12]
b=3
Now that we have the y-intercept, we know the equation is y=-6/5x+3.
The equation would be 4n=8000
to solve, divide 8000/4=2000, she has collected 2,000 signatures so far
Refer to attachment for your answer