The graph given above shows the following function. y =
cos(x/2)
What is the period of the function?
ОА.
211
OB.
N
4
O C.
T
OD. 40

Solve the system of equations. y= 2x y= x^2 - 15

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)

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !