A sample of 7 students was taken to see how many pencils they were carrying. 2, 3, 2, 5, 7, 1, 4
1. Calculate the sample mean.
2. Calculate the standard deviation.

Which expression is equivalent to the expression shown?

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?