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# LT-C week 2 - Section 2.1 Exercise 96 Exercise 96 World...

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Section 2.1: Exercise 96 Exercise 96 World grain demand. Freeport McMoRan projects that in 2010 world grain supply will be 1.8 trillion metric tons and the supply will be only ¾ of world grain demand. What will world grain demand be in 2010? (1.8).75=1.35 trillion metric ton/world grain demand for 2010 Section 2.2: Exercise 94 Exercise 94 Fahrenheit temperature. Water boils at 212°F. a) Use the accompanying graph to determine the Celsius temperature at which water boils. 100 degrees Celsius b) Find the Fahrenheit temperature of hot tap water at 70°C by solving the equation F=158 70=5/9 (F-32) (9/5) (70/1) = (5/9)(9/5)(F-32) (9)(14)= F-32 126=F-32 +32 +32 ____________________ 158=F Section 2.3: Exercise 16, 28, 76, 84 Exercise 16: a/4 – a/2 = -5 (4) a/2 – (4)a/2 = -5(4) 1a – 2a = -20 -1a = -20 -1a/-1 = -20/-1 a = 20 Exercise 28: 0.4x – 1.6 = 0.6x (100)0.4x – (100)1.6 = (100)0.6x 40x – 160 = 60x 40x – 160 – 160 = 60x – 160 40x = -100 40x/40 = -100/40 X = -2.5

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Exercise 76: 5x - 9 = x - 4 5x – 9 + 9 = x – 4 + 9 1x – 5x = x – 5 – 1x 4x = 5 4x/4 = 5/4 X = 5/4 Exercise 84: -3/4t + ½ (-4/3)-3/4 + 1/2 (-4/3) t = -4/6 t = -2/3 Section 2.4: Exercise 84 & 86 Exercise 84 Finding the list price.
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