8. Practice. A 29 cm pencil is placed 35 cm in front point of the lens is 28 cm from the lens,
a corwex lens and illuminated by a spotlight. The focal
A. What is the height of the pencil's image?
116 cm
B. How far from the lens will the image of the pencil be focused?
140 cm
Show your work
(I got the answers I just need to show them with the work)

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

answer///scientific method;