susan invested $2,000. part of it a 6% and the rest at 9%. if the annual income was $138, how much did she invest at each rate?

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.

The tree filled 3/4 of a cup in 1/2 and hour at what rate does syurup flow from the tree

Anew movie is released each year for 14 years to go along with a popular book series. each movie is 2 minutes longer than the last to go along with a plot twist. the first movie is 70 minutes long. use an arithmetic series formula to determine the total length of all 14 movies