Provide an exact evaluation of the expression: tan(7pi/12)
a. -2(1-√3)^-2
b. 2(1+√3)^-2
c. -2(1+√3)^-2
d. 2(1-√3)^-2

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

What expression is equivalent to log3(x+4)

Tyler reads 2/5 of a book on monday, 1/3 of it on tuesday, 2/9 of it on wednesday, and 3/4 of the remainder on thursday. if he still has 14 pages left to read on friday, how many pages are there in the book?