Jason plays the tuba 30 minutes a day. Which expression shows how many minutes Jason practiced in d days? A) 30 + d
B) 30 - d
C) 30 ÷ d
D) 30d

Question and answers are in the attached picture. you so much in advance.

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

[15 points]find the quotient with the restrictions. (x^2 - 2x - 3) (x^2 + 4x + 3) ÷ (x^2 + 2x - 8) (x^2 + 6x + 8)