Sequence: 3, 6, 11, 18, 27, … Part A: What explicit expression can be used to find the nth term of this sequence?

A.
3n + 2(n – 1)

B.
n2 + 2

C.
3n2 – 6

D.
3n + 12

Volume of a cylinder with a radius of 13 in and height of 30 in

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer