384 in^{3}. because if you have to add the bases together then so 7+5=12 then you times the width and height together so 4*8=32. Then you times 12 * 32 = 384.
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U should use friendly numbers when subtracting.......the numbers have to be between 3 and 10
-9 + 6 + (-7) +3=
-9 +6 = -3
-3 + (-7)= -10
-10 +3= -7
The second one because there is all the inputs are different. There is one input for every output.