Each truck in the line weigh two tons more than the truck before it. the trucks weigh a total of 32 tons.how many pounds does a truck weigh

If there are 4 trucks then the first truck weighs x
then x+2tons
then x+4tons
then x+6tons = 32tons
so 4x+12=32
         -12   -12
     /4         /4
x=5 
so plug it back in 
truck 1= 5tons or 10,000lbs
truck 2= 7tons or 14,000lbs
truck 3= 9tons or 18,000lbs
truck 4= 11tons or 22,000lbs

Remember that for a square of height H and length L, the area will be:

A = H*L

In this case, we know that the height is H = 4 units.

And the area is up to 48 square units

This means that the maximum possible area of this rectangle is 48 square units.

Then we have:

A ≤ 48 square units.

And we also could add:

0 square units < A ≤ 48 square units.

Now we can replace A by H*L = L*(4units)

0 square units < L*(4 units) ≤ 48 square units.

Now we need to divide all 3 sides by 4 units.

(0 square units)/(4 units) < L  ≤ (48 square units)/(4 units)

0 units < L  ≤ 12 units.

This is the range of lengths that Saritha can use to reconstruct the rectangle.

Now if we define b as the length of the bases, then we will use:

b =  height = 4units.

Then:

1b = 4units.

(1 b/4units) = 1

This means that:

12 units = (12 units)*1 = (12 units)*(1 b/4units) =  (12/4) b = 3 b

Then the range of possible values of L is:

0b < L  ≤ 3b