There were 35 students in a class. they were given math books (each priced at $0.55) and other books the total value of which was n dollars. how much money was spent to provide the students with all these books?

if i read it right it should be 19 dollars and 25 cents

Ok so for each book is $0.55 and there's 35 kids and we don't know exactly how many other books so that's wear N comes in.
We know there's at least 35 books meaning
35×$0.55= $19.25 N

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.