A 7 pack of popsicle cost $2.51 what is the unit price, round to the nearest cent

What is coefficient of the term of degree of degree 5 in the polynomial below

Me. i can't figure out this question. give an explanation too. .

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis