Step-by-step explanation:

Answer:
what are the types of functions
Step-by-step explanation:
3x+18
Step-by-step explanation:
Elena packed 48 cubes.
Each cube has an edge of 1 centimeter.
The number of layers that Elena can make depends on how each layer is arranged and depends on how many cubes are there in a layer.
Assume that each layer has only 1 cube, then there are 48 layers.
Answer:
First option: (Substitute)
2x+3 (x+1.5) = 12