Nina is going to ship a package using the box with the dimensions shown. A triangular prism. The triangular base has a base of 8 inches and height of 3 inches. The prism has height of 6 inches. Nina plans to fill the shipping box halfway with foam packaging. How many cubic inches of foam packaging does she need?
30 in cubed
6 in cubed
60 in cubed
72 in cubed

The answer is 36in3

Step-by-step explanation:

I took the test and got 100%

30 inches cubed

Step-by-step explanation:

i used a calculator

its not b

step-by-step explanation:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.