These 3 might be hard 1. If N x four thirds x 5 = 0, then N =
a) 0
b) 1
c) 2
d) 3
e) 4

2. If z fifths = 5, then z + 3 + ?
A) 4
B) 5
C) 15
D) 20
E) 28

3. In 1999, the average worker's income increased $2,000 per year starting from $24,000 annual salary. Which equation represents income greater that average? (L = income, X = number of years after 1999)
a) L > 2000X + 24000
b) L > - 2000x + 24000
c) L< - 2000x + 24000
d) L < 2000x -24000
e) L < 24,000X + 24000

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?