Kersha has two jobs. during the day she works as an office clerk, and in the evening she works as a cashier. her office job pays her $12.00 per hour. her cashier job pays her $8.25 per hour. in one week, kersha worked 55 hours. she earned a total of $585. let c represent the number of hours kersha works as an office clerk. which equation can be used to find how many hours kersha worked in both jobs? a. 12c + 8.25(55 – c) = 585 b. 12c + 8.25(c – 55) = 585 c. 8.25c + 12(55 – c) = 585 d. 12c + 8.25(585 – c) = 55

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?