A phone was originally sold for $850. The phone is now on sale for $595. What is the markdown percent on the phone? PLS HELP MARK BRAINLEST ASAP

On a coordinate grid, point p is at (4, 3) and point r is at (−2, −5). points q and s are a reflection of both points across the x-axis. what are the coordinates of q and s? q(−4, 3), s(2, −5) q(4, −3), s(−2, 5) q(−4, −3), s(2, 5) q(−4, 3), s(−2, 5) ; -; i can't figure it out, if someone can me with the answer,that would be nice

Given: ac and db are diameters. m∠3=

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?