Expression equivalent to (-3x + 6.3y) - (-5x + 4.2y)

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

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?

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints