Answer:
$11.40×$3=$34.2
This the price of the stapler
Answer : The equation for 'h' is 
Step-by-step explanation :
The given equation is:

Now we have to determine the equation for 'h'.

Multiplying the equation by 2.

on simplifying, we get:

Dividing the equation by 'b'.


or,

Therefore, the equation for 'h' is 
Answer:7.5
Step-by-step explanation:
I^2 = (sqrt-1)^2 then the square cancels out so the answer is just
-1
Answer: $4.20
Divide 16.8 by 4 to get 4.2, or $4.20.