Write an equation of the line that is perpendicular to the line y =
1
3
x + 6 that passes through the point (2,-3).

A) y = 3x + 9
B) y = -3x - 3
C) y = -3x + 3
D) y =
1
3
x + 9

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?