for Do the Math by Wendy Lichtman
In the eighth grade, 1 math whiz 1 popular boy, according to Tess's calculations. That is, until she has to factor in a few more variables, like:
3 cheaters (y),
and 2 best friends (z) who can't keep a secret.
Oh, and she can't forget the winter dance (d)!
Then there's the suspicious guy Tess's parents know, but that's a whole different problem.
Can Tess find the solutions?