Answer:
The formula for the given problem is given below:
= (1+B$12)×B13
Explanation:
Immediately you do one, then you can autofill the formula to the mentioned range B15:B17 and then to C14 to H17
When been done correctly, this is how the formula will look in those cells if you do it correctly.
Check the file attached below to see it.
Answer:
flat screw driver
because if the screw is negative then you will need a flat screw driver