20 has been added to the total of scores, so the new mean for the 20 scores will be 20/20 = 1 higher than it was.
The new population mean is 15+1 = 16.
4x +9
3x and x are like terms
And 2 and 7 are like terms
Hope this helps :D
So what u need to do is
46+x=180 and u will get the answer
The answer is B.
I timesed 50 by 100 and 1,000. So 5 would be in the thousands place.
