Helpppp this is due today!!!!
1 answer:
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Answer:
An exponential function
Step-by-step explanation:
So let's suppose that at 9:00 am there were 132 cars. We'll call this
On the next half an hour, let's say at 9:30, the number of cars trippled, this is:
the next half an hour, at 10:00 am, the number of cars trippled, this is:
and finaly, at 10:30am, the number of cars trippled again, so:
We can now see a pattern there which can be simplified as:
or
where:
initial number of cars
n=number of half hours after 9:00 a.m
number of cars after n number of half hours.
That function we found there is an exponential function, which represents an initial amount being multiplied by the same number several times.
To find the inverse of a function, switch the x and the y and then solve for the new y. Like this: 
. Subtract 5 from both sides to get 
and then multiply both sides by 3. 3(x - 5) = y. B is your choice.