Erinn's basic cell phone plan charges $54.99 for service plus $0.24 per minute beyond the including 500 minutes in the plan. how much will it cost erin if she used her cell phone for 690 minutes in one month?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?

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?