The school librarian got money to buy reference works on cds. to find the cost c of n cds, she used the function c = 32.99n. how much did she spend on 3 cds?
a.99.03
b.98.70
c.98.97

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