The table below shows the fourth roots of different numbers: number (x) 16 16 81 81 fourth root of the number (y) 2 −2 3 −3 part a: does the table represent y as a function of x? justify your answer. (5 points) part b: the total cost f(x), in dollars, for renting a boat for x hours is shown below: f(x) = 32x + 75 what is the value of f(8) and what does f(8) represent? (5 points)

A. No. A function must be single-valued, meaning there can only be one value of y for any given x.

B. f(8) = 32*8 +75 = 331
Read the definition:
  f(8) is "the total cost in dollars for renting a boat for 8 hours"

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle