The answer is the third one :)
386 divided by 20 is 19.3 so Greg averaged 19.3 miles per gallon.
A mother function is the simplest function of a family of functions.
For this case, the first thing to do is to observe that the figure is symmetrical with respect to the FH axis.
Therefore, the following lengths are the same:

So, by equalizing both sides we have:

From here, we clear the value of m.
We have then:


Answer:
The value of m is given by:
