Final answer:
Sar'anyiah will need to make 20 cups of punch for her party, calculated by multiplying the number of guests (5) by the number of cups each will drink (4).
Step-by-step explanation:
Part A: Expression for Punch
To calculate the total amount of punch needed, we need an expression that multiplies the number of guests by the cups of punch each will drink. Since Sar'anyiah estimates that each person will drink 4 cups of punch and there are 5 people attending, including herself, the expression is:
4 cups/person × 5 people
Part B: Value of the Expression
Using the expression from Part A:
4 cups/person × 5 people = 20 cups
Therefore, Sar'anyiah will need to make 20 cups of punch to ensure there is enough for everyone at the party.