12. The circumference of a circle is 15 pi centimeters. What is the area of the circle in terms of pi?
10 points
A. 7.5 pi square centimeter
B. 15 pi square centimeter
C. 56.25 pi square centimeter
D. 225 pi square centimeter

the box value is  $ 0.5

Step-by-step explanation:

if we don't want to get confused what we can do is 2 equations, one that represents the relationship between the box and the candy, and another that represents the money

x = candy

y = box

x = y + 19

x + y = 20

we replace in the second equation the value of x by (y + 19)

x + y = 20

(y + 19) + y = 20

y +y = 20 - 19

2y = 1

y = 1/2

y = 0.5

we replace in the first equation the value of y by its value

x = y + 19

x = 0.5 + 19

x = 19.5

so the candy value is $ 19.5 and the box value is  $ 0.5