Answer:
Multiply 8x6 and subtract 2 and 3
Step-by-step explanation:
8x6=48
48-3=45
45-2=43
Answer:31 dived by 81 is 0.3703
Step-by-step explanation:
D bc it needs to have a y intercept of -1
Answer: 4 years
Step-by-step explanation:
A(0) has to be amount at start. Assume that's 5mg
Then A(t) = 5×(0.5)^(0.25t) = 5×2^(-t/4),
(also known as 5 exp(-λ t) with λ = ln(2)/4, incidentally).
We need to such that A(t) = 2.5mg, or 2^(-t/4) is 1/2, which happens when -t/4 is -1, or t is 4.
