A circular donut has a diameter of 7cm. The circular hole in the center of the donut has a radius of 1.5cm. Find the circumference

of the donut.

A-18.4 cm

B-56.52 cm

C-21.98 cm

D-84.78 cm

Which represents the inverse of the function f(x) = 4x? h(x) = x + 4 h(x) = x – 4 h(x) = x h(x) = 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)

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0