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":
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Answer:
(x-8)(x-5)
Step-by-step explanation:
The only way to solve this equation is to factor it. You would have to use the sum and product rule.
The volume of a cylinder with a radius r and a height h:
The volume of a cone with a radius r and a height h:
Therefore
We have 
Substitute:
Answer: The volume of a cone is equal 10.75 in³
$3.13 is the answer like it please thanks
