If 9i is a root of the polynomial function f(x), which of the following must also be a root of f(x)?

a.-9ib.-1/9i c.1/9i d.9-i

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.

Which function represents the sequence? f(n)=n+3 f(n)=7n−4 f(n)=3n+7 f(n)=n+7