Solve this pls with explanation to all questions pls help I didn’t understand this question so pls help me

it would open into a square depending on the type of envelope i’m not sure about the second part

3

step-by-step explanation:

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

simple 80 pieces in 1 sercing so 80*47=3760+20=3780