The graph represents a person’s heart rate and beats per minute during 30 minutes of exercise.

which statement best describes the relationshipbetween heart rate and during the time of exercise

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)

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Math it's appreciated. (picture provided)