Please take a screenshot of your work and send it to answer my question . thanks ! <3 I will definitely be choosing Brainliest too ! Good luck !

i think it would be 42cm

there were a lot of them but the first one to pop up on a google search was bts

f(x) is   are being squared

g(x) is   increasing by 2

h(x) is adding .25 each time

k(x) is taking the square root

f(x) and k(x) are exponential functions