(3*15)+(17*15)=45+255=300
the final answer is 300
or 20 fifteens
Answer:

Step-by-step explanation:
Donna's Rate is 
Rico's Rate is 

Cross-Multiply



Donna's Rate is 
Rico's Rate is 

Answer:
Look if it has 1 regtangle as the base and 4 triangles it is a rectangular pyramid.
If it has 2 circles as the base and a long tube it is a cylinder.
If it has 2 triangles and 3 rectangles it is a triangular prism
Lastly if it 6 sides of rectangles and squares it is a rectangular prism