What are the zeros of the function y = x2 + 10x – 171, and why?
a) the zeros are x = –19 and x = 9 because in factored form, the function is y = (x – 19)(x + 9).
b) the zeros are x = –19 and x = 9 because in factored form, the function is y = (x + 19)(x – 9).
c) the zeros are x = 19 and x = –9 because in factored form, the function is y = (x – 19)(x + 9).
d) the zeros are x = 19 and x = –9 because in factored form, the function is y = (x + 19)(x – 9).