I got the answer as 300 but that’s not one of the options so I’m not sure. Take a look st my working out in my image.
Complete Question:
Suppose a local vendor charges $2 per hot dog and that the number of hot dogs sold per hour is given by
, where is the number of hours since 10 AM:
a) Find an expression for the revenue per hour as a function of x, R(x)
b) Find and simplify, R(x(t))
Answer:
a) R(x) = 2x
b) ![R(x(t)) = -8t^2 + 40t + 120](https://tex.z-dn.net/?f=R%28x%28t%29%29%20%3D%20-8t%5E2%20%2B%2040t%20%2B%20120)
Step-by-step explanation:
a) This is a very trivial exercise.
![x(t) = -4t^2 + 20t + 60](https://tex.z-dn.net/?f=x%28t%29%20%3D%20-4t%5E2%20%2B%2020t%20%2B%2060)
The number of hot dogs sold per hour is given by x
Charge per hot dog = $2
An expression of revenue per hour,R, as a function of the number of hot dogs sold per hour, x, is therefore: R(x) = 2x
b) ![x(t) = -4t^2 + 20t + 60](https://tex.z-dn.net/?f=x%28t%29%20%3D%20-4t%5E2%20%2B%2020t%20%2B%2060)
R(x(t)) = 2(x(t))
![R(x(t)) = 2(-4t^2 + 20t + 60)\\R(x(t)) = -8t^2 + 40t + 120](https://tex.z-dn.net/?f=R%28x%28t%29%29%20%3D%202%28-4t%5E2%20%2B%2020t%20%2B%2060%29%5C%5CR%28x%28t%29%29%20%3D%20-8t%5E2%20%2B%2040t%20%2B%20120)
this is a relation because it has all of the same number more than once
Answer:
You need to figure out how much steak per person (15 ounces/ 4 people = 3.75 ounces per person) then multiply 3.75 * 10 people = 37.5 ounces if you need pounds then divide it by 15 to get the number of pounds.
Step-by-step explanation: