Paul is purchasing a dehumidifier for $162.75, including tax. He gives the
sales clerk 1 fifty-dollar bill, 4 twenty-dollar bills, and 7 five-dollar bills. How
much should he receive in change?

2.25$ or 2 singles & a quarter

Step-by-step explanation:

50+20+20+20+20+5+5+5+5+5+5+5=165

162.75-165=2.25

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation: