a share of stock costs $83.60. the next day, the price increases $15.35.
the following day, the price decreases $4.75. what is the final price?

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!