1 Which list shows the dependent quantities in the graph?

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?