It costs $7.15 to rent a kayak for 1 hour at a local state park. The price per hour stays the same for up to 5 hours of rental. After 5 hours, the cost decreases to $5.75 per hour. How much would it cost to rent a kayak for 6 hours?

$35.90

Step-by-step explanation:

(5.75 • 5) + 7.15

= (5 • 5) + (0.75 • 5) + 7.15

= (25 + 3.75) + 7.15

= 28.75 + 7.15

= (28 + 7) + (0.75 + 0.15)

= 35 + 0.90

= $35.90

Hope this helps! :)

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:

-4

step-by-step explanation: