Which function is a quadratic function? Ot(x) = (x – 4)2 + 3
O 9(x) = (2x + 4)3 + 3
Orx) = (-6x-4) + 3(x + 2)2
O s(x) = -(x-6) + 3(x + 1)

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36