John took 600mg of a medicine. Each hour, the amount of medicine in his body decreases by about 25%. Which function represents the amount of medicine in johns body after x hours A. f(x)=600(0.75)^x

B. f(x)=600-25x

C. f(x)=600(0.25)^x

D. f(x)=600-75x

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb