Simplify to a single power of 5

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

If square root x = -7, then x= -49 true or false

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9