If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g-1)(3)?
6-3-(4 + 3)2
6-3- (4 – 32)
6(3) - 4 + 32
6(3) - 4-32
a

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?