Answer:
To determine how many sandwiches short Ms. Carson will be, we need to calculate the total amount of jelly used and compare it to the amount available.
Ms. Carson has three 2-pound jars of jelly, which is a total of 3 x 2 = 6 pounds of jelly.
Since 1 pound is equal to 16 ounces, Ms. Carson has 6 x 16 = 96 ounces of jelly.
Ms. Carson uses 0.5 ounces of jelly on each sandwich.
If we let x represent the number of sandwiches, then the total amount of jelly used is 0.5x ounces.
To find out how many sandwiches Ms. Carson can make, we need to divide the available jelly by the amount used per sandwich:
96 ounces / 0.5 ounces per sandwich = 192 sandwiches.
Since Ms. Carson has 200 campers to feed, she will be short by 200 - 192 = 8 sandwiches.
Therefore, Ms. Carson will be 8 sandwiches short.