W at is 1/8 in decimal form
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Using an exponential function, it is found that 4 mg of the substance would still be left after 32 days.
<h3>What is an exponential function?</h3>A decaying exponential function is modeled by:
In which:
- A(0) is the initial value.
- r is the decay rate, as a decimal.
In this problem, considering that the initial amount if of 64 mg, and we are working with half-lifes, the equation is given by:
32 days is 32/8 = 4 half-lifes, hence the amount remaining in mg is given by:
More can be learned about exponential functions at brainly.com/question/25537936
Answer:
see below
Step-by-step explanation:
we are given a exponential function
we want to figure out the missing values of y for x i.e (-2,-1, and 2) to do we can consider substituting so,
when x is -2 y should be
rewrite ⅕ in exponent notation:
by law of exponent we obtain:
simplify square:
when x is -1:
rewrite ⅕ in exponent notation:
use law of exponent which yields:
when x is 3:
by law of exponent we obtain:
simplify square which yields: