One of the medical uses of Iodine–131 (I–131), a radioactive isotope of iodine, is to enhance x-ray
images. The half-life of I–131 is approximately
8.02 days. A patient is injected with 20
milligrams of I–131. Create an exponential
function that will calculate the amount of I-131
left after d days.

6 on both sides and twelve on the top and the bottom

step-by-step explanation:

hope it

step-by-step explanation:

x^(1/6) · x^(1/6) · x^(1/6)   ·x^(1/6) = x^(4/6)   since we add the exponents

4/6 can be simplified to 2/3

the simplified form is x^(2/3)

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

i got 10.28 but that rounds up to 10.3