Makayla answered 14 questions correctly on her multiple choice science final and
earned a grade of 70%. How many total questions were on the final exam?

There are 30 questions on the test. If 7/10 =70%, then multiply that by 2 and you get 14/20, which equals 70%.

Step-by-step explanation:

there will be 35 boys in each team. : )

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: