What is the negation of the following statement: "i exercise and i feel tired."
a. i exercise and i feel tired.
b. i exercise and i feel envigorated.
c. i don't exercise or i feel tired.
d. i exercise or i feel tired.
e. i don't exercise and i feel tired.
f. i don't exercise or i feel envigorated.
g. i don't exercise and i feel envigorated.
h. i exercise or i feel envigorated.

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?