Free points.2+000000000000=?

How many $20 bills do you need to have to make $280

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

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”?