Carlos can read 30 pages per hour in the 270-page book that he is reading. at this rate, how long will it take him to finish the book?

Trigonometry hellllllpppppppp asap

Which is an equation for the nth terms of the sequence 12,15,18,21

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?