7 feet per second, 172 minus 67 means he dropped 105 feet then divide that by how many seconds it took to get 7 fps.
Answer:
17% of 200 books is 34 books. 35% of 80 letters is 28 letters.
Step-by-step explanation:
For this case we must factor the following expression:

We take the sign "-" as a common factor of the expression, taking into account that:

To factor, we must find two numbers that, when multiplied, result in -48 and when added, result in -2. These numbers are -8 and +6.

Then, we factor the expression within the parenthesis as:

Answer:
