The member ship fee for a gym is $100 and for each visit after that the charge is $10
a. how much will each visit cost?
b. what will be the cost of joining the gym and visiting it on n occasions.
11. a walker is already walking 5km per day and decides to increase this amount by 0.1km per day starting august 1st
b. is this an arithmetic sequence? explain

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?