Rolls are being prepared to go to grocery stores. divide 72 rolls into 2 groups so the ratio is 3 to 5. ( include your work)

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

How do i do this activity, is appreciated

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x