What is the total cost for 4 rotor blades priced at $1,250 each plus a 7% sales tax?

To find the total cost for 4 rotor blades each priced at $1,250, you first calculate the total cost before tax. Multiply the price of one rotor blade by the number of blades:

4 rotor blades x $1,250 per blade = $5,000.

Next, you need to apply the 7% sales tax to the total cost. First, calculate the sales tax amount by taking 7% of $5,000:

Sales tax = 7% of $5,000 = 0.07 x $5,000 = $350.

Now, add the sales tax to the initial cost to find the total cost:

Total cost = Cost of rotor blades + Sales tax = $5,000 + $350 = $5,350.

Therefore, the total cost including tax is indeed $5,350.