Hello can someone help me solve those questions please

[The information presented here applies to questions 12,13,14 \& 15.] You are considering an investment in an apartment building in Montclair, NJ. The building has a total of 12 apartments; 8 one-bedroom units and 4 two-bedroom units. One-bedroom apartments for $2000 /month, twobedroom units for $3000/ month. What is the annual potential gross income for this property? Question 13 1 pts If the typical vacancy rate for this type of property in this area is 8% what is the effective gross income for this property? If the typical vacancy rate for this type of property in this area is 8% what is the effective gross income for this property? Question 14 1 pts If operating expenses are 55% of total operating income, what is NOI ? Question 14 If operating expenses are 55% of total operating income, what is NOI ? Question 15 What is the estimated value of the apartment building based on a 6\% capitalization rate