i'm pretty sure it's 10x^3 + x - 1
hope this helps
Answer:
Step-by-step explanation:
Given
There are 120 Pianist in a competition
(a)In first round 30 pianist is selected
this can be done in 


(b)In the second round 5 pianist is selected out of 30
this can be doe by 


What is the question? I don't understand please explain?
Answer:

Step-by-step explanation:
27 = 7 + 2x
- 7 - 7
________

_______________________________________________
28 = 1 + 3x
- 1 - 1
________

I am joyous to assist you anytime.