Monica saw a total of 37 cardinals and finches
Solution:
Given that, Monica likes to watch birds and keep track of those she sees
One week Monica saw 25 cardinals and 12 finches
To find: Number of cardinals and finches she saw
From given,
Number of cardinals = c = 25
Number of finches = f = 12
Let "t" be the number of cardinals and finches she saw
Then we can say,
Total number of finches and cardinals = Number of cardinals + Number of finches

Thus she saw 37 cardinals and finches