Given that (ax - 2)2 - b = 9x2 - cx + 1 find the values of a, b
and c.

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5