Final answer:
The grocery store pays $3,000 in taxes weekly, which is 10% of their weekly sales of $30,000. There seems to be a typo in the provided options since none of them match the calculated amount.
Step-by-step explanation:
To calculate how much taxes the grocery store pays weekly, we need to take 10% of their weekly sales. The weekly sales are $30,000. To find 10%, convert the percentage to a decimal by dividing by 100, which gives us 0.10. Then multiply the weekly sales by this decimal:
$30,000 Ă— 0.10 = $3,000
Therefore, the store pays $3,000 in taxes weekly, which corresponds to option B) $3,750, although there seems to be a typo as the calculation indicates $3,000.