Daniel bought a pokemon card at a store for $10. He sold the card for $20. Later he bought the same card back for $30 and then sold it again for $50.
How much money did he make or lose on the pokemon card?

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).