Find the sum and choose the correct answer. 2n^3+4n^2-7 and -n^3+8n-9. A) -n^3-4^2-8n-16

B) n^3+4n^2+8n+16

C) n^3+4n^2+8n-16

D) 3 n^3+4n^4+8n-2

Select the correct answer. employee earnings per month($) 1 1,200 2 2,600 3 1,800 4 1,450 5 3,500 6 2,800 7 12,500 8 3,200 which measure of spread is best for the data in the table? a. range b. quartiles c. interquartile range d. mean absolute deviation