C(x)=15+(15x)(.07) how do i solve this question

How do you find the circumfrance of a circle?

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)