What is the difference of the given
polynomials?
(13x2 + 2x - 7) and (7x2 + 3x + 4)

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

What is the the greatest common factor ?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )