4 x n^2
four times a number that is squared
A is coefficient of x square
b is coefficient of x
and c is constant term in the polynomial
4.76 rounded to one decimal place is 4.8
Look at the decimal place you want to round (the 7, since it is the one decimal place).
Then look at the next digit (the 6). If it is 5 or greater, round up. Otherwise, round down.
You round up the 7 up because 6 is 5 or greater.
So you get the answer 4.8
Put it on desmos it will graph it