Can someone help me will Mark brainliest if correct

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup