(3,8)
-5 is 4 units right, so do the opposite, 4 units left. 2 is 3 units down so do 3 units up
R(p) = -15p² + 200p + 10,000
To find the maximum of the function, we take the first derivative and equate to 0:
R'(p) = -30p + 200
0 = -30p + 200
p = 6.67
A price of $6.67 will maximize revenue.
Answer: 5 kilometers
Step-by-step explanation:
Answer:
x = -3
Step-by-step explanation:


Add 2/3 x to both sides: 
Subtract 8 from both sides: 
Multiply both sides by 3: 
Divide both sides by 11: 
Therefore, point of intersection between both lines is at point (-3, -1)