Arlene is testing whether school is more enjoyable when students are making high grades. She asked 100 students if they enjoyed
school and whether their GPA was above or below 3.0. She found that 30 of the 40 students with a GPA above 3.0 reported that they enjoyed school, and 15 of the 60 students with a GPA below 3.0 reported that they enjoyed school. What is the probability that a student with a GPA below 3.0 does not enjoy school? 15%
25%
45%
75%
The maximum number of turning points in a cubic function is 2.
In this case,
The discriminant is , which means the derivative has no real roots. This means there are no critical points and thus no turning points/relative extrema.
, which means the derivative has no real roots. This means there are no critical points and thus no turning points/relative extrema.