Answer:
If you are talking about the rectangular prism the equation is
2 × L × W + 2 × L × H + 2 × W × H
If you are talking about Triangular prism the equation is
B × H + L × S + L × B + L × C
She paid $42 dollars in total.
You spelled statements wrong
40-x=20 is a simple equation you may be able to use but if you need a more advance one let me know because there wasn't much of an explanation of the type of equation you need.
32 tenths is 0.32. cause it is asking for a decimal
