Find the mean and the standard deviation of the data set {10, 1, 4, 1, 2}.

Which table shows a proportional relationship between miles traveled and gas used?

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?

In cents, what is the least total amount that cannot be obtained by using a combination of fewer than eight coins from a collection of pennies, nickels, dimes and quarters?