Ben has agreed to play fewer video games and spend more time studying. He has agreed to play less than ten hours of video games
each week. On Monday through Thursday, he plays video games for a total of 5 1/2 hours. For the remaining three days, he plays video games for the same amount of time each day. Find t, the amount of time he plays video games, for each of the three days. Graph your solution.
Rearrange to: x^2 + 18x - 25 = 0 Then factorise (I like to do it by completing the square): (x + 9)^2 -81 -25 = 0 (x + 9)^2 = 106 x + 9 = sqrt(106) The sol'ns are: x = -9 + and - sqrt(106)
