pre- algebra math

Question

What is the prescribed dosage of a certain medicine for a 6-year-old child if the adult dosage of

the medicine is 180 milligrams?

The formula below is used to calculate the correct dosage for a child:

c= a/a+12 ∙ A

C = child’s dosage in milligrams

a = age of the child

A = adult dosage in milligrams

1.    What does variable “a” represent?    

Type answer here

2.   What does variable “A” represent?     

Type answer here

Using the formula above, solve for “C”. Show your work

Answer 1

a=6

A=180

Are there () around the a+12 in the denominator?

If you plug in the designated numbers above which is called substitution, you end op with:

C=(6/18)*180

C=60mg