A power function with even exponents will have what type of symmetry?

Susie ran a race. she ran 55 miles an hour, and the race took her tt hours to complete.

How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

What are the two main purposes of edgar allen poe’s, “the masque of the red death? ”