A football is kicked from the ground and follows the graph of the function y = -x + 5t where y represents height and t represents seconds. At the same time, an arrow is launched from a height of 1 foot and follows the straight path y = 3. At seconds the football and the arrow are at the same height the second time. A. 1.7
B. 1.9
C. 2.1
D. 4.3​

here the number -5 is all of the following except a rational number.

step-by-step explanation:

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 correct choice is marked

step-by-step explanation:

the first two graphs show multiple turning points. the last graphs matches the description in every detail.

she will travel a distance in the range of 3 - 11 miles