Answer: 
<u>Step-by-step explanation:</u>
1st marble and 2nd marble

16 pints to gallons equals 2 gallons.
Answer:
Answer is – 3
Step-by-step explanation:
expand the expression using ( a – b) ( a + b) = a² –b²
( 3 ) ² – ( 6) ² *remember to place your square roots inside the brackets my phone doesn't have one*
then simplify the radical
3–6 = – 3