C as when they put more hours into the social media they will study less and less which leads to less test scores
Answer:
1) To see whether it is a maximum or a minimum, in this case we can simply look at the graph. f(x) is a parabola, and we can see that the turning point is a minimum. By finding the value of x where the derivative is 0, then, we have discovered that the vertex of the parabola is at (3, −4).
2
Answer:
=19
Step-by-step explanation:
=6÷3+17
=2+17
=19
