Your parents took your family out to dinner. your parents wanted to give the waiter a 15% tip. if the total amount of the dinner was $42.00, what should be paid to the waiter as a tip?

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

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)

Can someone answer this question for me