You lift a 45-n bag of mulch 1.2 m and carry it a distance of 10 m to the garden. how much work was done?

Gravity pulls down.  So horizontal motion doesn't do ANY work against gravity.  You can ignore that part.

The only work done is when you lift the bag.

Work = (force) x (distance)

Work = (45 N) x (1.2 m) = 54 Joules

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.