Absolute value of ___-2__ < __1.5___

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

Do you mind if you guys me with this question i’m on number 8

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”?