6+x is an example of an expression. if it was a variable it would be 6x.
The probibility of Alonzo pulling out two green marbles is 2/9 I believe.
I hope this helps
OK the next step is to multiply 3r -1 by -7r
this gives us -21r^2 + 7r and we write it below -21r^2 + 25r
and subtract
This gives us 18r and we bring down the -6 to give
18r - 6
Finally we divide 18r by -3r to give -6 then add - 6 to the r^2 - 7r on the top
then multiply -3r - 1 by -6 to give 18r - 6
subtraction then leaves nothing.
so the answer is r^2 - 7r - 6
Good morning.
In level
4, the experience needed is:

In the hardest settings, the multiplier is:

So, the adjusted experience points are:
multiplier . base experience
Use the Pythagorean theorem (a^2+b^2+x^2)