I NEED HELP FOR ALL THREE PLEASE IM GIVING BRAINLIST HELP

Three times the sum of a number and seven is negative thirty-six. what is the number?

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.

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30