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)

When only separate discreet points are graphed it is called?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)