0.25 is rational because it is a terminating (means 'its stops') fraction.
is the same as 
Dividing by 3 is the same as multiplying by the fraction 1/3
Answer:
x = 2
Step-by-step explanation:
5x - 6 = 4
add 6 to each side
5x = 10
divide each side by 5
x = 2
Area of the parallelogram = 20 x 16 = 320
Area of the triangle on top = 1/2 x 20 x 8 = 80
Total = 320 + 80 = 400 square inches