Simplify 9 log9 (7) is the answer 7

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

Me find the value of x each figure.