Answer:
part A : $36
Step-by-step explanation:
part B : calculate no. of people each night
no. of tables accommodating 4 people ( no. of people that can be accommodated on one such table) + no. of tables accommodating 2 people ( no. of people that can be accommodated on such table)
=> 3(4) + 2(2)
=> 16 people
assumed amount of tip that will be earned each night per person : $ 2.25
amount of estimated tip per night => 16 x 2.25 => $ 36