Need help to set up I forgot how In a lab, 220 cells are present at the beginning of an experiment. During
the first 9 hours, the number of cells increased by 20% each hour. Write an
exponential model giving the number of cells y present t hours after
starting the experiment. Estimate the time when the number of cells is
650.
Model: (220*1,2)
Time to 650 Cells: About 6 Hours

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?