Number 1 and 2 please?

What is the 12th term of b(n)=-4-2(n-1)

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°

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.