Update math requirements for Economics and Biology majors

- Economics: Change requirement from two semesters of calculus to one semester
  (MATH 1210, or MATH 1190, or MATH 1310, or APMA 1090) per updated department policy
- Biology: Clarify that one semester of calculus is required for B.S.; optional for B.A.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: lenis2000

info/new_to_dept.md

@@ -31,7 +31,9 @@ nav_weight: 20
 
 - **Course Enrollments:**  Students enroll in their courses through SIS. SIS maintains waiting lists for courses and automatically enrolls waitlisted students as space comes available. Situations may arise when students cannot enroll through SIS, and need a permission from the instructor which is handled by SIS.
 
-- **Scheduling Classrooms:** If your classroom is not the right size or you wish to reserve a classroom for a review session, makeup exam, etc., see the front office (room `216`), or use [the Source classroom booking system](https://25live.virginia.edu/). Department-managed classrooms (Kerchof 111, 128, 201, 314 and 326) can be booked through the front office.
+- **Scheduling Classrooms:** There are two separate systems for booking classrooms:
+  - **25Live (UVA-wide classrooms):** For booking University-managed classrooms across Grounds, use [the 25Live classroom booking system](https://25live.virginia.edu/). This includes most lecture halls and classrooms outside Kerchof Hall.
+  - **Kerchof Hall rooms (Department-managed):** For booking department-managed rooms in Kerchof (rooms 111, 128, 201, 314, and 326), contact the front office (room `216`) or use the [Kerchof meeting room booking system](https://math.virginia.edu/mrbs/). These rooms are managed by the Math Department and are not part of the 25Live system.
 
 - **Copying Exams:** The Department has a copier/scanner (room `203`) and floor printers (rooms `313`, `118`) for printing. You should be able to print from your office computer (hooked up to LAN or eduroam wifi) to any of these printers. The front office (room `216`) can send large print jobs to UVA Printing and Copying Services. Please allow two days for turn around.
 
@@ -43,8 +45,6 @@ nav_weight: 20
 
 - **Math Department Tea Time** is every Tuesday and Thursday during the semester in Kerchof 314 (Math Lounge / Common Room), starting at 3:15.
 
-- **Meeting Rooms at Kechof booking system**: [`https://math.virginia.edu/mrbs/`](https://math.virginia.edu/mrbs/), see help [here](https://math.virginia.edu/mrbs/help-uva.php)
-
 - **Mailboxes:** Everyone has a mailbox in the mailroom (off the Lobby on the main floor).
 
 - **Supply Room (220):** The Supply Room has paper, pens, chalk, toner cartridges, and other supplies. There is also a refrigerator, microwave, and FAX machine, and a large refrigerator in the coffee room (Ker 312). You may check out a projector and cable connectors at the Math main office (room `216`).

undergraduate/placement.md

@@ -79,7 +79,7 @@ To prepare for the mathematics major, you should complete the calculus sequence
 			<p>Biology</p>
 			</td>
 			<td>
-			<p>one semester of calculus ({%include course number=1210%} or {%include course number=1310%}<span style="margin-left:-4px"></span>)</p>
+			<p>one semester of calculus ({%include course number=1210%} or {%include course number=1310%}<span style="margin-left:-4px"></span>) required for B.S.; optional for B.A.</p>
 			</td>
 		</tr>
 		<tr>
@@ -112,7 +112,7 @@ To prepare for the mathematics major, you should complete the calculus sequence
 			<p>Economics</p>
 			</td>
 			<td>
-			<p>{%include course number=1210%}<span style="margin-left:-4px"></span>, {%include course number=1220%} or {%include course number=1310%}<span style="margin-left:-4px"></span>, {%include course number=1320%}</p>
+			<p>{%include course number=1210%}, or {%include course number=1190%}, or {%include course number=1310%}, or APMA 1090</p>
 			</td>
 		</tr>
 		<tr>