Answer:
98
Step-by-step explanation:
So we have the expression:

And we want to evaluate it when x is 3 and y is 8.
So, substitute:

Multiply:

Add:

And we're done!
Step-by-step explanation:
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Answer:
3 people attended the banquet
Step-by-step explanation:
The function is given as:
b = 75 + 15n where
b represents the total = 122
n represents the number of people attending = ??
If the total cost of the banquet is 122, how many people attended the banquet?
Hence,
122 = 75 + 15n
122 - 75 = 15n
47 = 15n
Divide both sides by 15
n = 47/15
n = 3.1333333333
Approximately to the nearest whole number = 3
Therefore, 3 people attended the banquet.