Can someone tell me if part A is correct i think the answer is 120+40x=180+20x

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?