quest 2: simplify z4/z-4?

quest 3: simplifiy (-8xy)(5xy2)?

quest 4: evaluate x/y for x= -5/9 and y= -5/7?

quest 5: write the equation of the line in slope intercept form the equation of the line that passes through the point (-2, 1) and perpendicular to the line -5x-6y=30?

quest 6: find the distance between points P(1,4) and Q(5,2)?

quest 7: a forestry organization is going to construct a 5 ft. tower for a new anemometer. The tower will be supported by three cables, each attached to the top of the tower and to points on the roof of the building that are 12 ft from the base of he tower. find the total length of the three cables?

quest 8: a book is 1 in. thick not including the cover. if the book contains 364 sheets of paper find the measure of one sheet of paper to the closest thousanth (3 places after the decemal?