Video game porsche bought a new video game. the first time she played, it took her 24 minutes to reach level 2, the second time it took 18 minutes, the third time it took 16 minutes, and the fourth time it took 12 minutes. use mental math to determine how many minutes she spent at level 1 while playing these four games.

Suppose there are 10 five and six-year-old attending a birthday party. when a 30 year old mother walks into the room with an infant in her arms, what happens to the mean age in the room? what happens to the standard deviation of ages in the room? a. the mean and standard deviation of both change. b. the meaning will change, but the standard deviation will stay approximately the same. c. i mean will stay approximately the same, but the standard deviation will change. d. the mean and standard deviation will both stay approximately the same.

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81