Simplify the following expression: 21(x-4)+2 a- 21x - 2 b- 107x c- 21x-82 d- 27x

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

Find the volume v of the solid obtained by rotating the region bounded by the given curves about the specified line. y = x â’ 1 , y = 0, x = 5; about the x-axis v = sketch the region. sketch the solid, and a typical disk or washer.