The question is set up oddly, but if they mean that one of the interior angles of a triangle measures 52degrees, what is the measure of its exterior angle, the you’d do the following: 180 (since they would form a linear pair) - 52 = 128 degrees.
The doctor has 35,602 and she needs 69,600.
We need to do subtraction to find out how much more she needs to raise.
69,600 - 35,602 = ?
69,600 - 35,602 = 33,998
The doctor needs to raise $33,998 more.
Your final answer is A. $33,998
OK then he could've bought either 6 packages of 12, or 4 packages of 12 and 3 of 8....