I will only answer the word problems. (Just use a calculator for 1 to 12 lol.
13. Your score will be -24. (-6 • 4)
14. The decrease in temperature will be, 15 degrees or the change in temperature will be -15 degrees. (3 • 5)
15. You'll have 56 dollars left in your account. (18 • 8 = 144. 200 - 144)
16. At 3 AM it will be -7 degrees. (3 • 5 = 15. 8 - 15) I am not 100% sure on this one because the question was worded weirdly.