Find the distance each pair of points. Which pair of points is the greatest distance apart?

a) A (1,4), B (6,6)
b) C(-4,7), D (3,2)
c) L(2,-5), N (-3,-1)
d) Y (-6,-4), Z (0,5)

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?