Martha and Janet each decide to invest $600 into different accounts. Martha's account earns $4.50 every month. Janet's account earns 0.65% in interest every month. Which statement correctly compares the amount of money in Martha's and Janet's accounts.​

Janet's interest is $3.90 every month.

Step-by-step explanation:

First, you need to set up a proportion to find Janet's interest:

0.65%/100 = x/600

Step 1: Cross-multiply.

0.65/100/100 = x/600

(0.65/100)*(600)=x*(100)

39/10=100x

Step 2: Flip the equation.

100x=39/10

Step 3: Divide both sides by 100.

100x/100=39/10/100

x=39/1000 (0.039)

Then move the decimal twice to the left to find the dollar amount:

0.039 ⇒ 3.90

Janet's interest is $3.90 every month.

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step-by-step explanation:

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