What’s the difference between a 16-ounce brick and a carpenter

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

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.

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?