What happens to angles under a dilation?

"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Which ordered pair is a solution of the equation? 2x+3y=10