You notice the line of mercury in your barometer is all the way to the top—30 inches. is this high or low pressure? what kind of weather should you expect? a. high; bad weather b. high; good weather c. low; bad weather d. low; good weather

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?