Which number line correctly shows 4.5 - 2.5? +
15
O
-10
-25 215 04 05
06 65 15 225 235 245
-45 -4 -35 -3 -25-3-1.5 -1 -0.5 005 i 15 2 25
On the number line

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?