Calculate the sales tax and the total cost, including 7.5%sales tax, of a 189.99 tool set. Round to the nearest cent.

Sales Tax: $14.25

Total Cost: $204.24

Step-by-step explanation: To find the sales tax of a $189.99 tool set, first convert 7.5% to a decimal. 7.5% as a decimal is 0.075.

Now to find the sales tax, multiply 0.075 x 189.99 which equals a sales tax of about $14.25 rounded to the nearest cent.

Now to find the total cost add the sales tax to the original price of the tool set. $14.25 + $189.99 which equals a total cost of $204.24.