Emir is ordering sets of guitar strings and bags of picks for his guitar. A new set of strings costs $12 and a new bag of picks
cost $4. Shipping costs $6. The expression 12g + 4g +6
gives the total cost for buying g sets of strings and picks.
Simplify the expression by combining like terms.

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6

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?