Answer:
For me i got this. A) = 16.846mg B) 24 days I am also in summer school for toronto schoolboard. I used the formula like how it said so should be good.
Step-by-step explanation:
A)
[tex]P(t) = Po(2)x^\frac{t}{d} \\=5(2)^\frac{7}{4} \\=16.817mg[/tex]
B)
[tex]320=5(2)^\frac{t}{4}\\ 64=2^\frac{t}{4}\\2^6=2^\frac{t}{4}\\6=\frac{t}{4}\\(4)6=t \\t=24 days[/tex]
