A theater has 82 seats.
If the theater sells out all its seats for $18 a seat, which would be the best strategy for estimating the total amount of money received?

A 15X80
B 15X85
C 20X80
D 20X85

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

(05.02)a farmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. a parallelogram with a height of 6 yards and side length 9 yards. the height forms a triangle with the slanted side of the rhombus with a base of 2.5 yards. rhombus is split into a soy half and a corn half. each bag of soil covers 40 square yards. how many bags should the farmer purchase?

An octagonal prism has jow many lateral faces?