Answer:
9y^4
Step-by-step explanation
i believe you just add 6yand 3y
hope this helps :)
if this is a test wait for someone else to confirm just to make sure
Answer:
Step-by-step explanation:
20+4(20) 20+80 = 100
Answer:
Step-by-step explanation:

In exponent multiplication, if the bases are same then add the exponents.
Answer:
12 times 4, or 12 multiply by 4
Answer:
12/43 = 27.90%
Step-by-step explanation:
1. 12/43 = x/100
2. x= 100(12/43)
3. x= 27.90%