Karen’s Kitty Korner offers cat sitting services for the pampered cats of Beverly Hills. During the week, she offers her cat sitting services $5 an hour along with an additional fee of $12. On the weekend, her fees change to $3 per hour and an additional fee of $18. After how many hours of cat sitting will her weekend rates be the same as her weekday rate?

it would be 3

Step-by-step explanation:

because when you do 5×3=15 then +12= which gives you 27 and then do 3×3=8 then +18=which also gives you 27.

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: