Ricardo is building a rectangular wooden box to ship a large item in. he needs the length of the box to be 30 inches longer than the width. he also needs the height of the box to be 5 inches shorter than the width. create an equation to represent the volume of the wooden box in terms of the width. the question wants me to fill in the blank y=_+_x^2-_x. it also asks what the largest width would be.

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?