So first you would want to divide 1,500 by 4 because the ratio is 4:7. The answer you get if you divide 1,500 by 4 is 375. This is your answer because if you divide 1,500 by 4 you are seeing out of how many 'dentist' would recomend this product.
<span>The constant rate of change is 30 seconds because: 1 mile=30 seconds 2 miles=1 minute 3 miles=1 minute and 30 seconds 4 miles=2 minutes 5 miles=2 minutes and 30 seconds or in other words 2.5</span>
