P(x)=90-3x 1< x< 20 what is the revenue function

Use the price-demand function below, to answer parts (A), (B), and (C).

p(x) = 9- 3x      1< x < 20

(A) what is the revenue function?

r(x)=

what is the domain of the revenue function?

multiple question

a.0,672

b.1,20

c.0,20

d.0,90

im pretty sure it would be 5 am, hope that , and give brainliest and guys if this is right then press the button and give 5 stars

he has now walked a total of what?

if i know what this is maybe i can

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