Can someone check my answer ?

quadrilateral abcd is inscribed in circle o.
what is m∠b?

m∠a + m∠b = 180°
2x - 7 + 2x + 3 = 180
4x - 4 = 180
4x = 184
x = 46

m∠b = 2x + 3
m∠b = 2(46) + 3
m∠b = 92 + 3
m∠b = 95°

Find the simple interest earned to the nearest cent for each principal,interest rate,and time 735 7% and two and a half years

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

Consider an example of a deck of 52 cards: example set of 52 playing cards: 13 of each suit clubs, diamonds, hearts, and spades ace 2 3 4 5 6 7 8 9 10 jack queen king clubs diamonds hearts spades what is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.