Hello there!
0.8 is not irrational
If a number can be written with a perfect fraction, it is rational
Hope I helped!
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It's A. Y=mx+b hope this helps
Where is the diagram? How do we answer without it?
Answer:
Step-by-step explanation:
Given that a small business assumes that the demand function for one of its new products can be modeled by

Substitute the given values for p and x to get two equations in c and k

Dividing on by other we get

Substitute value of k in any one equation

b) Revenue of the product is demand and price
i.e. R(x) = p*x = 
Use Calculus derivative test to find max Revenue
R'(x) =
EquateI derivative to 0
1-0.000589x =0
x = 1698.037
When x = 1698 and p = 16.56469