The initial cost is $45. To determine the increase, you need to follow two steps.
First you have to find what 7% of the original $45 is. This will tell us how much the cost will increase by.
To find 7% of $45, you need to multiply .07 x 45 = 3.15
This tells us that 7% of $45 = $3.15
Next, you have to add the increase to the original cost. This will be the new monthly cost.
$45 + $3.15 = $48.15
0.6>0.39
0.6>0.07
0.6<0.8
0.6<0.69
0.6>0.17
<u>0.8 and 0.69 are greater than 0.6</u>
I=10/3......is your answer
Three-hundred-six-billion four-thousand two-hundred ten