Will give brainiest what is the a-value of the function, then determine if the graph opening up or down f(x)=−5(x+7)2+6? question 4 options: a = -5, opens down a = -5, opens up a = 7, opens up a = 7, opens down

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.