Answer:
It must be the cost of the one table.
Step-by-step explanation:
It's logic. 25x is the cost of the (unknown) number of chairs.
The total Amount he spent is the cost of the chairs <u>plus</u> what he spent on the table.
If you're simplifying the equation your answer is going to become -d^3 +3d^2 +23d -30
The way you find area is multiplying width times height, so you have to multiply 15 by 4 which equals 60. Therefore the answer is 60
The best thing is to have a ruler with the appropriate units to construct these triangles;)
