Which equation results from taking the square root of both sides of (x + 9)2 = 25?
x + 3 = ±5
x + 3 = ±25
x + 9 = ±5
x + 9 = ±25

According to the general equation for conditional probability, if p(ab) = 4/5 and p(b)= 5/6, what is p(a|b)? a. 8/9 b. 35/36 c. 24/25 d. 15/16