+x: 4 units of a and 5 units of b per hour
y: 3 units of a and 10 units of b per hour
- cost to run machine x $22/hr
cost to run machine y $25/hr
4x + 3y 90
5x + 10y = 150
x20
y20
x=number of hours machine x runs
y=number of hours machine y runs
the objective function is c =
x
done
intro

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:

i can't read the graph

step-by-step explanation:

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80