The first thing you need to do is add and then subtract
Answer:
D
Step-by-step explanation:
each one can be multiplied by 4 to get the cost
The square will have area
.. (9 cm)^2 = 81 cm^2.
The two triangles together will have area
.. (9 cm)*(12 cm) = 108 cm^2.
The sum of the areas of those three shapes is
.. 81 cm^2 +108 cm^2 = 189 cm^2
Well z=5 and z=-7 hope this is the correct answer
