V= L*w*h
21.322.132= 3434*1212*h
h= 21.322.132/3.434* 1212 = 5.330.533/1.040.502
h ≈5,123 inch
I believe its 147 in ² :))))))
2(10*3)=60
2(1/2*10*8.7)=87
60+87=147
30x^7
Multiply the coefficients (6•5) to get 30, then add the exponents (4+3) to get 7
Hope this helps!
Basically, this is saying that 80% of (x) = 2 so you have know what the whole would be. It would be 2.5 because 80% of 2.5 is 2. So because you are subtracting 7 from v to get 2.5, you have to add 2.5 to 7 to get v. V=9.5