To determine the value of \( f(16) \) given the function \( f(x) = 90 + 4x \):
Plug \( x = 16 \) into the function:
\[ f(16) = 90 + 4(16) \]
Calculate \( 4(16) \):
\[ 4(16) = 64 \]
Now, combine that with 90:
\[ f(16) = 90 + 64 = 154 \]
So,
\[ f(16) = 154 \]
(b) Now, let's analyze the meaning of \( f(16) \).
The function \( f(x) \) represents the total number of guests seated at the venue when there are \( x \) small tables, along with 15 large tables.
When \( x = 16 \), \( f(16) \) gives us the total number of guests seated when there are 16 small tables and the 15 large tables that always seat 6 guests each.
Thus, \( f(16) = 154 \) represents the total number of guests at the event when there are 16 small tables set up.
So, the correct interpretation is:
D. The total number of guests at the event when there are 16 tables set up.