Which technique is most appropriate to use to solve each equation?

+3)(x+2)=0
2.)x² + 6 = 31

a.)quadratic formula
b.)zero product property
c.)square root property

Enter the missing numbers in the boxes to complete the table of equivalent ratios of lengths to widths. ? 18 8 ? 10 30 12 ?

Icould really use some with this question.

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.