Mn - 4m - 5n + 20
(mn - 4m) + (-5n + 20)
m(n - 4) + (-5n + 20)
m(n - 4) - 5(n - 4)
(m - 5)(n - 4)
So mn - 4m - 5n + 20 completely factors to (m - 5)(n - 4)
Answer:
c. 
Step-by-step explanation:
When plugging in zero into the given equation:

Answer is in indeterminate form = use L'Hospital's Rule:
(Derivative of the top / Derivative of the bottom)

Rearranged equation:

Plug zero back into equation:

Answer:

When written in "vertex form":
• (h, k) is the vertex of the parabola, and x = h is the axis of symmetry.
• the h represents a horizontal shift (how far left, or right, the graph has shifted from x = 0).
• the k represents a vertical shift (how far up, or down, the graph has shifted from y = 0).
• notice that the h value is subtracted in this form, and that the k value is added.
If the equation is y = 2(x - 1)2 + 5, the value of h is 1, and k is 5.
If the equation is y = 3(x + 4)2 - 6, the value of h is -4, and k is -6.
Answer: it’s 2
Step-by-step explanation:
I hope this helps you
x=4 q (4)=8.4-7
q (4)=32-7
q (4)=25