Most likely because there are more boys than girls but there could be an odd that a girl will be in the group since there is less girls and hs;es picking at random
Since the equation says "cos(x-2)", we know that the horizontal displacement is 2 units.
Negative exponents work like this:

So, you have

This number is less than 1, so she will play tennis.
R mean radius and d mean diameter so C mean circumference ? please clearifie these - thank you
The circumference of the circle is 40π. Hope it help!