A package of poster board usually sells for $8.40. This week the package is on sale for $6.30. What is the percent of discount? A.
25%

B.
33.3%

C.
15%

D.
21%

What is the distance between (–2 1/2,-3) and (1, –3)?

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

Explain how you divide powers with like bases. discuss why the bases have to be the same. how are these rules similar to the rules for multiplying powers with like bases.