Use mental math to approximate what a 15% tip would be for a bill of $31.99. a. $3.20 b. $4.80 c. $5.60 d. $6.40 Please select the best answer from the choices provided A B C D

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.