Given a circle with a radius of 4 which is the circumference

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

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. f(x) = 3x^2 - 12