Rearrange to make x the subject, could you explain the steps, ty : ) (it's question umber 12 in the pic)

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Sandy is ordering bread rolls for her party, she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

Which of the following is a solution of z^6 = 64i? 2(cos105° + isin105°) 2(cos120° + isin120°) 2(cos135° + isin135°) 8(cos15° + isin15°)