Answer:
5c - 3 (4a)
Step-by-step explanation:
If you're just grouping and adding them together you would get 5c - 3 (4a).
Answer
Find out the how many tiles are in each section .
To prove
Let us assume that the number of tiles are in section are be x.
As given
A mosaic at the art museum is divided into 6 sections that each contain about the same number of tiles.
There are 2,889 tiles total in the mosiac .
Than the equation becomes
6 × x = 2889

x = 481.5
Therefore the total number of tiles in each sections are 481.5 .
Length = 3cm
Volume = length x width x height
D.
None of the above. Because your expression would be, 2 + 0.75 x 6.
Hope it helps. ;)