Afour-pack of 42 -ounce ink cartridges sells for $85.99 . the expression 42c represents the amount of ink in a number of cartridges. what does the variable c represent?

c is represented the number of four pack of ink cartridges.

Step-by-step explanation:

As given

A four-pack of 42

-ounce ink cartridges sells for $85.99 .

Thus

The expression 42c  represents the amount of ink in a number of cartridges.

Here c is represented the number of four pack of ink cartridges.

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:

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.