4:
2 dimes, 1 penny
21 pennies
1 dime, 2 nickels, 1 penny
4 nickels, 1 penny
Answer:

Step-by-step explanation:
Hello,

Imaginary term must be the same so
-2ab=-12
2ab = 12
ab = 12/2 = 6
So the product of a and b is 6
Hope this helps.
Do not hesitate if you need further explanation.
Thank you
Is there a picture? I don't know how to answer without the actual problem. Sorry,
Answer:
I got $0.42
Step-by-step explanation: