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------------------------------------------------ Which expression has an estimated product of [tex]$45$[/tex]?

A. [tex]$44.7 \times 2.1$[/tex]

B. [tex]$7.5 \times 8.4$[/tex]

C. [tex]$8.7 \times 5.28$[/tex]

D. [tex]$38.1 \times 7.3$[/tex]

To find the expression that has an estimated product of [tex]$45, let's evaluate each expression one by one:

1. $[/tex]44.7 \times 2.1[tex]$
- The product is $[/tex]93.87[tex]$.

2. $[/tex]7.5 \times 8.4[tex]$
- The product is $[/tex]63.0[tex]$.

3. $[/tex]8.7 \times 5.28[tex]$
- The product is $[/tex]45.936[tex]$.

4. $[/tex]38.1 \times 7.3[tex]$
- The product is $[/tex]278.13[tex]$.

Now, let's see which product is closest to $[/tex]45[tex]$.

- The product of $[/tex]8.7 \times 5.28[tex]$ is $[/tex]45.936[tex]$, which is the closest number to $[/tex]45[tex]$ among the computed products.

Therefore, the expression $[/tex]8.7 \times 5.28[tex]$ has an estimated product closest to $[/tex]45$.