Answer:
0
Step-by-step explanation:
To graph this problem you have to place a point on 20 and go down 5 and go over 2 to the right and do the opposite, (5 up over 2 on the left) and then you just connect the dots.
Answer:

Step-by-step explanation:
the third option
Answer:
Cost of one pencil: 
Cost of one eraser: 
Step-by-step explanation:
Let be "p" the cost in dollars of one pencil and "e" the cost in dollars of one eraser.
Based on the information given in the exercise, you can set up the following system of equations:

You can use the Elimination Method to solve the system of equations.
Multiply the first equation by -3 ad the second one by 4. Then add the equations and solve for "e":
{
Substitute the value of "e" into any original equation and solve for "p":

Answer:
x=3.2 ft
Step-by-step explanation:
Just subtract them and take the square root.
(50x^2 + 250) -(40x^2 + 350) = x^2=10
x=3.2 ft