posted by Aline .
1) If y=kx, where k is a constant, and y=128 when x=16, what is the value of y when x is increased by 25%?
(I got 160?)
2) Aaron calculates using a certain foot and line spacing, that each page of a typed document contains at least 240 words and at most 260 words. What is the least number of pages needed for a 12,000-word document?
(I got 50 pages)
3) How many solutions to the equation 4 cos x=1 lie between x=0 and x=3(pi)
(^I don't understand this)