Darrin put the numbers 7.25, 7.52, 5.72 and 5.27 in order from the greatest to the least. is his work correct? explain.

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

what i would say the best answer is a. 40.5