What is 147 rounded to the nearest 10?

Me. i can't figure out this question. give an explanation too. .

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)