To determine how many senior lunches the grant can provide, divide the total amount of the grant by the cost per lunch:
\[ \text{Number of lunches} = \frac{1.925 \times 10^6 \text{ dollars}}{2.75 \text{ dollars/lunch}} \]
Calculating the division:
\[ \frac{1.925}{2.75} \approx 0.700 \]
Now, keeping in mind the exponent from the scientific notation of the grant:
\[ \text{Number of lunches} \approx 0.700 \times 10^6 \]
This can also be written in proper scientific notation by adjusting the decimal:
\[ 0.700 \times 10^6 = 7.00 \times 10^5 \]
Thus, the final answer, in scientific notation, is:
\[ 7 \times 10^5 \]
The correct response is:
7×10^5.
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