How do you calculate the area of a circle?
Area of a circle is equal to the
ctimes

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.

If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f-g)(x).

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?