6 blades in 1 windmill is the "unit rate" A unit rate is the number per thing. You will need to multiply. Multiply 6X7. 6 for 6 blades and 7 for 7 windmills. It is 42. 42 blades are in 7 windmills.
Answer:
7
Step-by-step explanation:
The width is smaller, so it is 7.
If you factor it then your answer will be -3(-3z-5) if you simplify the answer is 9z+15
