Hank is selling his entire shell collection. Each shell (s) is being sold for $45. He will make $675. How many shells did Hank have?

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