A 200 mg dose of a radioactive dye is placed in a patient's bloodstream to better see the formation of blood clots in the arteries. If the dye is eliminated from the body at a rate of 7.5%
every hour, how long will it take for 50 mg of the dye to remain?

1; 35 is the ratio

step-by-step explanation:

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.