Part of the graph of the function f(x) = (x + 4)(x - 6) is shown below.
Which statements about the function are true? Select two
options.
у
The vertex of the function is at (1,-25).
6
The vertex of the function is at (1,-24).
4
The graph is increasing only on the interval -4< x < 6.
The graph is positive only on one interval, where x <-4.
2+
The graph is negative on the entire interval
-4 <x< 6.
-6
2.
4
6
х
- 4 - 2
-2
6

Stu and ambrose are working together on a study of whether diet is related to students' mental health. first, they randomly select 10 students from the student center and 10 students from the office of counseling and psychological services. then, they ask students to rate their diet in terms of healthiness on a scale of 1-100 before completing a 20-item mental health survey. a) name one of the constructs being studied b) how was the construct you named above operationally defined in this experiment? e) was the variable you described above their independent variable, their dependent variable, or a controlled variable? d) what is a confounding variable? what is a potential confound in this study?