30% = .3
.3(24.40a + 14.50c)
24.40 = cost of adult ticket
14.50 = cost of child ticket
a = # of adult tickets sold
c = # of child tickets sold
.3 * 24.40a + .3 * 14.50c
answer: 7.32a + 4.35c
<h2>
Hello!</h2>
The answer is: 15mg
<h2>Why?</h2>
0.5% means that there are 0.5 grams per 100 mL, and a 0.5 grams are equal to 500 milligrams.
So, to calculate how many milligrams will be received per injection, we need to make the following calculations:

Have a nice day!
Answer:
B
Step-by-step explanation:
Answer:
1/5x+2
Step-by-step explanation:
Area = r^2 x PI
to find r take the square root of the area:
r = √100 = 10
The circumference of a circle is the diameter times PI.
The diameter is 2 times r = 2 x 10 = 20
The circumference = 20PI m
The answer is C.