It’s for a test help me please

The Last Option: Billy, Bonnie, Benny, Bobby

Step-by-step explanation:

Bobby = 8.3

Bonnie = 840%

=> 840/100

=> 8.4  

(8.4^2 = 70.56)

Billy = Square root of 71

=> Square root of 71 is between 8 and 9.

=> 8.4^2 = 70.56. So, the square root of 71 must be a larger number than 8.4.

=> Square root of 71 is 8.426.

Benny = 8 1/3

=> 25/3

=> 8.3333333333

If we order these greatest to least:

=> 8.426, 8.4, 8.3333333333, 8.3

=> Billy, Bonnie, Benny, Bobby

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol