A clock with an hour hand that is 18 inches long is hanging on a wall. At noon, the vertical distance between the tip of the hour hand and the ceiling is 25 inches. At 3 P. M., the distance is 43 inches; at 6 P. M., 61 inches; at 9 P. M., 43 inches; and at midnight the distance is again 25 inches. If_

An empty bucket is placed under a faucet dripping at a constant rate of 4 milliliters per minute. with the given information, which of these statements is a reasonable conclusion? a there will be 24 milliliters of water in the bucket after 16 hour. b there will be 60 milliliters of water in the bucket after 14 hour. c there will be 160 milliliters of water in the bucket after 20 minutes. d there will be 100 milliliters of water in the bucket after 40 minutes.

What is the value of x when x + 7 = 21?

How is this equation completed? i cannot find any examples in the book.