Which expression is equivalent to 8 x minus 12 y + 32?
16 (0.5 x minus 4 y + 32)
16 (0.5 x minus 0.75 y + 32)
16 (0.5 x minus 0.75 y + 2)
16 (0.5 x + 4 y + 2)

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0