Are the ratios 1:4 and 6:18 proportional

No, they are not proportional

Step-by-step explanation:

To see if they are proportional, simplify 6:18

1:4 is already in it's simplest form, so it cannot be simplified further.

Simplify 6:18 by dividing each number by 6:

6:18

= 1:3

1:3 is not equal to 1:4

So, the ratios are not proportional

4th option is correct xy=-10

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$30.32

step-by-step explanation:

65.00*.12=2.80

65.00-2.80=57.20

57.20*1.06=60.632

60.632/2=30.316