150 = 85 + 2x this is real hard for me, could anybody possibly ?

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

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

Complete the steps to find 4.830 ÷ 5