28. Which expression has a value that is greater than 42.537?
Explain as well please

Answer:
A
Step-by-step explanation:
40×10=40
2×1=2
5×1/10=0.5
2×1/100=0.09
3×1/1000=0.003
40+2+0.5+0.09+0.003=42.593
The expression (a) (4 * 10) + (2 * 1) + (5 * 1/10) + (9 * 1/100) + (3 * 1/1000) has a greater value
To determine the expression greater than 42.537, we simply solve the given options till we arrive at a solution.
For option A, we have:
(4 * 10) + (2 * 1) + (5 * 1/10) + (9 * 1/100) + (3 * 1/1000)
Evaluate the products
40 + 2 + 0.5 + 0.09 + 0.003
Evaluate the sum
42.593
By comparison,
42.593 is greater than 42.537
Hence, the expression (a) has a greater value
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