Which polynomial function has a leading coefficent of 1, roots -2 and 7 with multiplicity 1, and root 5 with multiplicity 2? A) f(x)= 2(x + 7)(x + 5)(x - 2)

B) f(x)= 2(x - 7)(x - 5)(x + 2)

C) f(x)= (x + 7)(x + 5)(x + 5)(x - 2)

D) f(x)= (x - 7)(x - 5)(x - 5)(x + 2)

1 1/5

step-by-step explanation:

asdsaddsa

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source: