Final answer:
Paul will pay $7.74 for the lawn sprinkler after applying the 10% Tuesday discount to the original price of $8.60.
Step-by-step explanation:
The question requires us to calculate the cost of a lawn sprinkler for Paul after a 10% discount on the original price of $8.60. To find the discounted price, we need to multiply the original price by the discount percentage and subtract it from the original price. First, we convert 10% to a decimal which is 0.10 and multiply it by $8.60 yielding $0.86. Then, we subtract $0.86 from $8.60, resulting in $7.74, which is the discounted price that Paul will pay.
Therefore, the cost of the lawn sprinkler for Paul after a 10% discount on Tuesday is $7.74.