Help me find x please

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

2.5 milligrams is equivalent to how many grams

Why can't my rank go i have 1723 points, but my rank is only at ambitious, which is only 250 points! like, (p.s. i know this isn't related to math, but i just don't know why it's doing this and i would really appreciate if someone could tell me whats going on with this)