Which explicit formula describes the sequence -9,-3,3,9,15...? A) an = 6n + 15
B) an = 6n - 15
C) an = 9n - 6
D) an = 9n + 6

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

What is the factored form of x2 − 4x − 5? (x + 5)(x − 1) (x + 5)(x + 1) (x − 5)(x − 1) (x − 5)(x + 1)

The trigonometric ratios sine and secant are reciprocals of each other