Easy! multiply the 6% by $8 then add it to the $8, now, multiply the 15% by the total of the cost with tax. then you all that to the total. ($9.75)
It would be nice If I could read it better. The answer is C if is says angle 3 and angle 5.
Answer:

Step-by-step explanation:
Given
Side of length of the square base = 36cm
Height of the pyramid shaped plant pot = 36cm
Since the question does not specify what to look for, we can as well look for the volume of the pyramid shaped plant pot.
Volume of a pyramid = 
Since the base is square
Base area = L²
Base area = 36²
Base area = 1296cm²
Height of the pyramid = 36cm
Substituting the resulting values into the formula
