Answer: The answer to first question is yours. In the second one, his is correct.
Answer:
she nags him
Explanation:
To get Rip to work, she'd henpeck him, which means she'd nag and complain to him
Answer:
The author's main purpose/idea is trying to persuade you to think shorter summer breaks are better.
Explanation:
So, basically, shorter summer breaks are better.
Turning point of a graph is the point where the graph where the graph changes from increasing to decreasing (rising to falling) or decreasing to increasing (falling to rising). For a cubic function, the critical point also serves as a turning point.