Problem Solving 4.
H. O.T.
Multi-Step Maria used one customary unit to
measure the height of a tomato plant when it was first planted and
a different customary unit when it was full grown. She used the
same measurement tool both times. What tool did she use? What
unit did she use each time?
5. Jill wants to know the length of a toy car in metric units. What tool
and unit will she use?

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:

13.46

step-by-step explanation:

16.80 x .20 = 13.46

8

step-by-step explanation: