How to graph -7/2x-5. with a picture please.

Look at attachment. has all info needed. need

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

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”?