Find measure of angle A

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

What expression is equivalent to log3(x+4)