Given the sequence 1, 9, 25, 49, 81, find the explicit formula. a. an=(2n−1)2an=(2n−1)2 b. an=n2−1an=n2−1 c. an=−4n+2an=−4n+2 d. an=−2n+2

Which ordered pair (c, d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.

Simplify this expression.2(10) + 2(x – 4) a. 2x + 16 b. x + 12 c. 2x + 12 d. x + 16