While reviewing for exams, a teacher knows that the number of topics he can cover is directly proportional to the length of time he has to review. If he can cover 9 topics in a single 45-minute period, how many topics can he cover in a 1-hour period?

Susie ran a race. she ran 55 miles an hour, and the race took her tt hours to complete.

Asoccer team has played 25 games and has won 60% of the games it has played. what is the minimum number of additional games the team must win in order to finish the season winning 80% of the games it has played?

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.