The distance din miles from an observer to the horizon over flat land or water can be estimated using the formula d-123/
where h is the height in feet of the point of observation. how far is the horizon for aperson whose eyes are 6 feet above the
ground?
a about 5.91 mi
c. about 3.01 mi
b. about 2.73 mi
d. about 7.64 mi

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?