5. The size of the graduating class of Kyle's school has been growing at a constant rate. Kyle's older brother's class had 257 students when he graduated in 2015. Kyle
is going to graduate in 2018, and his class has 329 students.
Write a linear function that models the school's graduating class size (y) in
terms of the year (x)

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:

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x

i think the answer is b

step-by-step explanation: