Answer: Gordon types 60 words per minute
Add -7 to both sides so that the equation becomes -3x^2 + 6x + 2 = 0.
To find the solutions to this equation, we can apply the quadratic formula. This quadratic formula solves equations of the form ax^2 + bx + c = 0
x = [ -b ± √(b^2 - 4ac) ] / (2a)
x = [ -6 ± √((6)^2 - 4(-3)(2)) ] / ( 2(-3) )
x = [-6 ± √(36 - (-24) ) ] / ( -6 )
x = [-6 ± √(60) ] / ( -6)
x = [-6 ± 2*sqrt(15) ] / ( -6 )
x = 1 ± -sqrt(15)/3
The answers are 1 + sqrt(15)/3 and 1 - sqrt(15)/3.
1/2 of a chance he will often grab a yogurt (as there is a total of ten items (5/10). 2/10 (1/5) of a chance he will grab a green apple. and 3/10 of a chance he will grab a red apple. he will have around a 1/5 chance to not grab a yogurt on 3 consecutive days. (not sure about the not grabbing yogurt chances, but.......)<span />
