R(x) = -4x² + 5x1
r(-3) =?

 r(x) = -51  

If the 1 is not a +1  or a -1    

It is very unusual to have a 1 in that position.

Step-by-step explanation:

Substitute the value given (-3) in place of x, and evaluate the function.

r(-3) = -4(-3)² + 5(-3)

r(-3) = -4(9) - 15

r(-3) = -36 -15

r(-3) = -51

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

alright well the answers to your question is

2xy/9 hope this have a nice day : )

step-by-step explanation: