Answer:
First one
Step-by-step explanation:
An expression for the cost will be 50+100n, where n is the number of cavities.
1/3 and 5 because 3/1 is three and 1/3 is the opposite while 1/5 is 5/1 which is 5.
1 Pretzel and 5 Bags of Popcorn
(WORK SHOWN BELOW)