Ronnie receives $42 for his birthday. Then he spends $15.50 at the movies . Write an addition expression, find the sum, and explain its meaning.

Suppose a ball is dropped fromca height of 6ft. it bounces back up but time it bounces, it reaches only 7/10 of its pervious height. what is the total of each height that the ball reaches after 5 bounces

Plzzz answer both questions and i will give you 100 points

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625