Each month, allison gets a $15 allowance and earns $100 working at the theater. she uses the expression 15x + 100y to keep track of her earnings. part a: identify the variables and coefficients in the expression. (3 points) part b: how many terms are in the expression, what are they, and how do you know? (4 points) part c: which term in the expression shows the total earned from her allowance? (3 points)

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?