Which expression would be easier to simplify if you used the commutative property to change the order of the numbers?

O A. Ķ +(-3) +5

O B. 20+17+(-) + (-)

O C. (-17) + 45+ (-33)

D. 20 + 80 + (-32)

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

When y’all answer can y’all explain too !