Question

Suppose a local vendor charges $2 per hot dog and that the number of hot dogs sold per hour is given by
x(t) = −4t^2 + 20t + 64,
where t is the number of hours since 10 AM,
0 ≤ t ≤ 4.
Find an expression for the revenue per hour R as a function of x?? Help???

Answer 1

it will be 2x(t)

Answer 2

R(x) = 2x

Answer 3

so times that equation by two?

Answer 4

No, simply R(x)=2x, since you are asked to write it down as a function of x, not t.

Answer 5

oh okay. so if it asks (r dot x)(t) i times the equation by two?

Answer 6

what
???

Answer 7

nevermind got it :D