In one day, the stock price for Zell Computers rose from $50 to $53 per share. By what percent did this stock price rise?
by __%

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

What is the least common multiple for 6 and 8? what is the least common multiple for 4 and 12 ? what is the least common multiple for 11 and 12? what is the least common multiple for 3 and 6?