PLZ HELP ME THIS IS SO CONFUSING AND I DON'T UNDERSTAND ANYTHING PLZZ HELP!PLZ ITS DUE IN 30 MINS An expression is given.(first image)

Which are equivalent to the given expression? Select each correct answer. And Explain? (second image)

Prove that 16^4-2^13-4^5 is divisible by 11.

Which expression is equivalent to -12(3x-3/4)

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g