1. Which one of the following is polynomial function ? (2x+1)x²
A. f(x) =
2x+1
-20 +4x²+8
C. f(x) =
2
2x +4x²+x
D. f(x) =
+ 2x
2x
B. f(x) = 4x2 +2V x2 + 3

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

Mr. walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?