How to mathematically take the antiderivative of 16-x^2.

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup