Round 52961 to one significant figure

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n

What is the binomial expansion of (2x-3)^5

Which of the following represents the factorization of the trinomial below? x^2+7x-30