A basketball coach plotted data about her shooting guard’s playing time and point scoring in a scatterplot. Shooting Guard Minut
es Played and Points Scored A graph has minutes played on the x-axis, and points scored on the y-axis. A line goes through points (8, 6) and (30, 21). Which is the equation of the line of best-fit? y = StartFraction 15 Over 22 EndFraction x + StartFraction 6 Over 11 EndFraction y = StartFraction 15 Over 22 EndFraction x + StartFraction 43 Over 11 EndFraction y = StartFraction 22 Over 15 EndFraction x minus StartFraction 86 Over 15 EndFraction y = StartFraction 22 Over 15 EndFraction x minus four-fifths
The new mixture has a total volume of 5 L + 9 L = 14 L.
70% of the 5 L alcohol solution is alcohol, so that it contributed 3.5 L of alcohol to the mixture. The pure water contributed no alcohol. So in the mixture, the concentration of alcohol is
