An object that is projected straight downward with an initial velocity v feet per second travels a distance
s = vt + 16t2 where t = time in seconds. If a coin
dropped from a window 144 feet above the ground has an
initial velocity of O feet per second, in how many seconds
will the coin reach the ground?
O A. 12 seconds
O B. 9 seconds
O c. 4 seconds
O D. 3 seconds

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas

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

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