Bob says that when he multiplies (x+3) (x-3) he gets x^2-6x-9 is he correct explain

"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.

Solve the equation for x.3(6x - 1) = 12 i've tried doing the math and i can't find out what i'm doing wrong

Graph y = -|x| + 2. click on the graph until the correct one appears.