You know that 6x+3 equals 45 because the two sides are equal. So you first put the equation 6x+3=45. Then you use the subtraction property of equality and subtract 3 from both sides. This gives you 6x=42. Then you divide 6 from both sides to get you final answer, x=7
This will be false a box plot is also known as quantile plots
1 mile = 1760 yds
Therefore, if we multiply 1760 by 10 we will get 10 miles in yards
1760 * 10 = <em>17600 yards</em>
Hope it was helpful and clear.
Cheers,