Solve for k
10/3 = k/9
k=?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?

How do you do the foil method with polynomials?

Charlie tosses five coins. what is the probability that all five coins will land tails up.