Jamal puts $2300 into an account that does not earn any interest. Every month after that, he deposits the same amount of money. This sequence
represents his account balance for the first few months:
$2300, $2500, $2700, ...
What is the explicit formula for the amount of money in his account at the
beginning of month n?
O A. a(n) = 200 2300" - 1
O B. a(n) = 2300 + (n - 1)200
O c. a(n) = 200+ (n - 1)2300
D. a(n) = 2300 2001 - 1

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?