The answer is: D
You have 3c (3 times her cousins age) -4 (4 less than)
4+3-1x22
4+3-22
7-22
-15
So -15 is the answer
I think its A but im not absolutely sure
Title:
<h2>The revenue will be maximum for 253 passengers.</h2>
Step-by-step explanation:
Let, the number of passenger is x, which is more than 194.
In this case, the travel agency will charge [312 - (x - 194)] per passenger.
The total revenue will be
.
As x is the variable here, we can represent the revenue function by R(x). Hence,
.
The revenue will be maximum when
.