Can I please get some help in this ;3;

If the table of the function contains exactly two potential turning points, one with an input value of –1, which statement best describes all possible values of m? m ≥ –12 –12 < m < 4 m ≤ 4 m ≥ 4 or m ≤ –12

Having a hard time understanding this question (see attachment).

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?