One sixth of the lions are male. how many lions are at the zoo

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

The statement tan theta= -12/5, csc theta=-13/12, and the terminal point determained by theta is in quadrant two

Harry owes the bank money. to repay his debt, he paid $150 back to the bank each month. after 10 months, his remaining debt was $6900. what was the original amount of harry's debt? how long did it take harry to pay back his entire debt?