Jamal buys postcards of washington, d. c., for $10.20, not including tax. each postcard cost $0.85. how many postcards did jamal buy? (giving 20 points to first one who answers it)

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.

Which point has an coordinates of (2,0) ? a

If wxyz is a square, which statements must be true? plz < 3