Synthetic division and the remainder theorem

one factor of f(x)=4x^3-4x^2-16x+16 is (x – 2). what are all the roots of the function? use the remainder theorem.
a) x = 1, x = 2, or x = 4
b) x = –2, x = 1, or x = 2
c) x = 2, x = 4, or x = 16
d) x = –16, x = 2, or x = 16

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?