Carolyn owes $9,620 on her electronics boutique credit card with a 16.4% interest rate. she owes $3,970 on her miscellaneous goods credit cards which has a 24.6% interest rate. what is the total monthly payment needed to pay off both cards in three years, assuming she makes fixed payments and does not charge any more purchases with the card? (2 points) $377.50 $537.47 $497.12 $480.47

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

i don't see any

step-by-step explanation:

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