Choose the correct simplification of the expression (7x − 3)(4x^2 − 3x − 6).
a. 28x^3 − 33x^2 − 33x − 18
b. 28x^3 33x^2 − 33x 18
c. 28x^3 − 51x^2 − 33x 18
d. 28x^3 − 33x^2 − 33x 18

Solve the system of equations. y= 2x y= x^2 - 15

Which set of reflections would carry trapezoid abcd onto itself? a) x-axis, y=x, y-axis, x-axis b) x-axis, y-axis, x-axis c) y=x, x-axis, x-axis d) y-axis, x-axis, y-axis, x-axis

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective