Jack and Serena can write a lab report in 6 hours. If all people work at the same rate, how many hours would it take to write a lab report if Kay joins Jack and Serena? Giving out 25 points whoever answers.

What is the sum or difference 4x10 – 9x10 (1 point) –5x10 –5x20 –36x10 –36x20 this is the cca test i need all the answers this is the first 2

"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.

Which expressions are equivalent to -6 + 3m