If I have 6.6% off of $15 what would the sales tax be

"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.

One integer is 8 times another. if the product is 72, then find the integers

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry