Download the app Math then take a picture and it wil give u the answer.
Answer:
14
Step-by-step explanation:
THE ANSWER TO THE PROBLEM IS 14
Derivative Functions
The derivative function gives the derivative of a function at each point in the domain of the original function for which the derivative is defined. We can formally define a derivative function as follows.
Definition:
let f be a function. The derivative function, denoted by f', is the function whose domain consists of those values of x such that the following limit exists:

540/9 = 60cm
408/10 = 40.8
60-40.8 = 19.2cm longer
J=amount Jake has; F=amount Fred has=2J
J+F=$54
J+2J=$54
3J=$54
J=$18
ANSWER 1: Jake has $18.
F=2J=2($18)=$36 ANSWER 2: Fred has $36.