Answer:
The equation which models the scenario is:   16 p + 32 q  = 1280 
Step-by-step explanation:
The total number of pints packed  = p
The total number of quarts  packed  = q
The weight of 1 pint jar of tomatoes  = 16 oz
So, the total weight of p pints  = p x ( Weight of 1 pint) = p x ( 16 oz) = 16 p
The weight of 1 quart jar of tomatoes  = 32 oz
So, the total weight of q quarts  = q x ( Weight of 1 quart) = q x ( 32 oz) 
= 32 q
Now, the TOTAL WEIGHT of p pints and q quarts
= Total weight of { p pints +  q quarts}  = 16 p + 32 q 
Also, chin canned a total of 1280 ounces.
⇒ TOTAL WEIGHT of p pints and q quarts = 1280 ounces
or,   16 p + 32 q  = 1280 ounces
Hence, equation which models the scenario is:   16 p + 32 q  = 1280