Question 2 2
Consider the equation 107 +15y = -90
(a) Part A
Which equation is equivalent to 10z +15y = -90 when solved for y?
3
2
B
y
II
т
--
6
3
2
6
D
y==-6

what graph

step-by-step explanation:

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8

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

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