Answer:
52
Step-by-step explanation:
Multiply grams per gallon times gallons to get grams.

Answer:
Lines are parallel.
Step-by-step explanation:
The given lines are
Rearrange the equation in the slope intercept form that is
where
is the slope.
<em>First Line:</em>

compare it with 
slope (
) of first line 
<em>Second Line:</em>

divide both by 

compare it with 
slope
of second line 
Since slope of two lines are equal

hence these lines are parallel.
Answer:
9 /(19+9) = 9/28
Step-by-step explanation:
i hope this helps. :)