I need help with 36, 40, 43, and 44. URGENT.

Answer:
I can't see #44.
But here are the answers to the other ones.
Step-by-step explanation:
36. y= x2 - 6x (the 2 is a exponent)
40. y = pie/8 - pie/4
43. 1, 3pie/2 : nothing can be further done with this.