A man is now three times as old as his son. In 10 years time, the sum of their ages will be 76. How old was the man when his son was born?​

Astudent simplified a rational expression as shown.

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)