Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.
Sally, an artist, plans to paint and sell some miniature paintings. She just
bought some brushes for $72, and paint and canvas for each painting costs
$21; she will sell each painting for $57. Once Sally sells a certain number of
her paintings, she will be breaking even. How much will Sally have earned?
How many paintings will that be?

idk this answer sorry cant on this one.

step-by-step explanation:

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.

5

step-by-step explanation: