The table below shows the weekly change in Lena’s bank account for four weeks. Week
1 2 3 4
Week change in bank balance (in $)
+10.25 -19.50 +6.75 -5.25
1. What was the change in Lena’s bank account from the beginning of week 1 to the end of week 4?
2. At the end of week 4, her bank balance was $46.25 . What was her bank balance at the beginning of week
1?