What is the area of square floor X？ （1) The perimeter of the floor is a whole-number multi

Sam is training for the marathon. He drove 12 miles from his home to the Grey Hills Park and then ran 6 miles to Red Rock, retraced his path back for 2 miles, and then ran 3 miles to Rock Creek. If he is then n miles from home, what is the range of possible values for n?

Amber works 20 days a month at d dollars per day for m months out of the year. Which of the following represents her monthly pay?

There are 450 birds at a small zoo. The number of birds is 5 times the number of all the other animals combined. How many more birds are there than non-bird animals at the zoo?

If x, y, and z are positive integers, and 4x=5y=6z, then the least possible value of x+y+z is