$11.$ Justin has created an area in the range J$1$:L$4$ for looking up data in the Courses table. First, he wants to find the number of people enrolled in a specific course. He has already entered the course ID in cell J$2.$

Look up the number of people enrolled in the course with Course ID $6120$ as follows:

a$.$ In cell J$4,$ begin to enter a formula using the VLOOKUP function.

b$.$ Use the Course ID in cell J$2$ as the value to look up$.$

c$.$ Use the Courses table as the table to search.

d$.$ Display the value in column $6$ of the table.

e$.$ Specify an exact match $($FALSE$)$ for the range lookup.

$12.$ Justin also wants to calculate the total charges for courses offered in a specific session. He has already entered the session number in cell K$2.$

Calculate the total charges for courses offered in Session $3$ as follows:

a$.$ In cell K$4,$ begin to enter a formula using the DSUM function.

b$.$ Use the Courses table $($range A$6$:H$29)$ including the headers and the data as the formula database.

c$.$ Use the Total Charged field header $($in cell H$6)$ as the field to summarize.

d$.$ Use the values Justin set up in the range K$1$:K$2$ as the criteria.