Answer:

Step-by-step explanation:
Factor
out of 
Answer:
2
Step-by-step explanation:
Use PEMDAS
First simplify the exponent (9)
Next multiply 5 and 3 (15)
Now add 15 and 15 (30)
Add 9 and 6 (15)
Lastly simply 30 by 15 (2)
Answer:
not sure
Step-by-step explanation:
No because 21 ft equals 7 yd
which us bigger than 3 yd
Answer:
same
Step-by-step explanation:
same solution means same slope