At the beginning of the month, Evan had $24 in his account at the

school bookstore. Use a variable to represent the unknown quantity in

each transaction below and write an equation to represent it. Then

represent each transaction on a number line. What is the unknown

quantity in each case?

c is the correct answer

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

there would be 162.15 calories in this cereal.

step-by-step explanation: