Write the expression 5x(x + 9) − 7(x + 9) in complete factored form. A.
(x + 9)(x + 9)
B.
(5x − 7)(x + 9)
C.
(5x − 7)(x + 9)(x + 9)
D.
(5x2 + 45x)(-7x − 63)

If the value of cos330°is√3/2 then find cos 165°.

Need solving this 2nd limit problem.

Tim has obtained a 3/27 balloon mortgage. after the initial period, he decided to refinance the balloon payment with a new 30-year mortgage. how many years will he be paying for his mortgage in total?