Andre and sally are playing a number game. andre tells sally, "i'm thinking of a number between 1 and 20. if i take the number and add 5, and then subtract 3, i get 19." what number is andre thinking of?

What are the vertical asymptotes of the function f(x) =5x+5/x2 + x-2

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?