Pythagorean Theorem Correct Answer: a^2 + b^2 = c^2
Permutations Correct Answer: nPr = n!/(n-r)!
Combinations Correct Answer: nCr= n!/(n-r)!r!
Rate= Correct Answer: Hits/(Times at bat)
Interest= Correct Answer: Principal*Rate*Time
Perimeter= Correct Answer: 2l+2w
Slope: m= Correct Answer: (y_2-y_1)/(x_2-x_1 )
Slope-Intercept form: Correct Answer: y=mx+b
Point-Slope form: Correct Answer: (y - y_1) = m (x - x_1)