Final answer:
The cost of the lawn sprinkler for Paul, a senior citizen purchasing on a discount Tuesday, will be 2) $7.74 after applying a 10% discount to the original price of $8.60.
Step-by-step explanation:
To calculate the cost of the lawn sprinkler for Paul, who is a senior citizen shopping on a Tuesday when there's a 10% discount, we need to find 10% of the original price and then subtract it from the original price. The original price of the lawn sprinkler is $8.60.
First, calculate the discount amount:
10% of $8.60 = 0.10 × $8.60 = $0.86
Next, subtract the discount amount from the original price:
$8.60 - $0.86 = $7.74
Therefore, the cost of the lawn sprinkler for Paul after the discount will be $7.74, which corresponds to Option 2.