Answer:
-5x^4+8x^3-2x+1
Step-by-step explanation:
What are your answer choices?
It will take them a total of 18 days because if it took them 9 days to make 90 multiply that by 2 to get 180 and you get the answer.
9 = 90
9 x 2 = 18
90 x 2 = 180
you make 180 suits in 18 days