Would the number 800,000 have a power of 10 with a positive or negative exponent in scientific notation? How about 0.00007? How do you know?

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Factor the polynomial by its greatest common monomial factor.

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test