Write (7 + 3i) + (6 − i) as a complex number in standard form.

a) 13 + 2i
b) 10 + 6i
c) 13 + 4i
d) 13 − 2i

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3? f(x) = (x + 3)2 + 3 f(x) = (x + 3)2 − 6 f(x) = (x + 6)2 + 3 f(x) = (x + 6)2 − 6