# Mathematics - Algebra

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 _3/4 _of world grain demand. What will world grain demand be in 2010?

94. Fahrenheit temperature. Water boils at 212Â°F.

a) Use the accompanying graph to determine the Celsius temperature at which water boils.

b) Find the Fahrenheit temperature of hot tap water at 70Â°C by solving the equation

70 = 5 ( F - 32).

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96. Perimeter of a triangle. The perimeter of the triangle shown in the accompanying figure is 12 meters. Determine

the values of x, x +1, and x + 2 by solving the equation x +(x +1) + (x + 2) =12.

98. Cowling's rule. Cowling's rule is another method for

determining the dosage of a drug to prescribe to a child.

For this rule, the formula

d =D(a+1)

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Gives the child's dosage d, where D is the adult dosage

and a is the age of the child in years. If the adult dosage

of a drug is 600 milligrams and a doctor uses this

formula to determine that a child's dosage is

200 milligrams, then how old is the child?

https://brainmass.com/math/basic-algebra/mathematics-algebra-222653

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