clara states that r^2 +5r+3r is an equivalent expression to 9r. why is clara statement incorrect choose all that apply

Pranza plotted point a in the coordinate plane below.

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

Someone me what is the area of this figure? 18m 18m 8m 16m