Answer:
a. 
Step-by-step explanation:
Given that

Now
if one is added i.e.

Now let us assume the other polynomial be x
So,


Answer:
12/45
Step-by-step explanation:
The unit rate is 12/45, because 4 times 3 is 12, and 9 times 5 is 45.
Answer:
120 sq. units
plus them all and add 100
Answer:
Infinite Solutions
Step-by-step explanation:
No math required since it is Infinite Solutions. :-)
There has to be something in between the two numbers, for example 7 x 7 or 7+7 not just 7 7. Without the equation it would be highly impossible to answer :D