Me with these 3 questions
1.to add or subtract linear expressions, combine terms.
a. leading
b. like

2.what is the answer to the first example? (3x+2)+(5x-1)
a.8x + 1
b.8x - 1

3.what is the answer to the second example? (1/2 +/2x -2)
a.-2x + 6
b.2x - 6

The answer is 30 grams. have fun

Volume is length times width times height so
20 times 8 times 30 which is 4,800
surface area is ph (p is perimeter of base), h is height.
so perimeter would be length+length+width+width so 20+20+8+8 which is 56. so multiply 56 times 30 which is 1680. hope this !