Julie started with 20 pieces of gum and gave away x pices . Conrad started whit 35 pieces of gum and gave away twise as many pieces as Julie did. How many pices of gum did Julie gave away if thay had the same amount of pieces of gum left? A) 18
B) 5
C) 15
D) 8

c: 15

Step-by-step explanation:

20-15=5

35-30=5

c

step-by-step explanation:

it would be see because your formula is f(x)=6x, so 6 times 1 is 6 and you go on and the best answer is c.

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