Mr. D bought 24 magic cards. some of the cards cost $1 per card some cost $3 per card. if he spent a total of $50, how many of each card did he buy?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Factor and solve to find roots x squared -x - 90 =0