Lynn had the following transactions on her credit card : -$62.91,-$9.50,-$3.10,+$3.10.what was the change to her credit card balance

Asap 25 pts brainliest to right best/answer

How do i do this activity, is appreciated

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!