What are the coordinates of the reflection image if point p (3,5) is reflected across the line y=1

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Ten times the square of a non-zero number is eqaul to ninety times the number