Solve the equation.log (3 + x) - log (x - 5) = log 3
A. x = -9
B. x = 
C. x = 
D. x = 9
Answer: D
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Two chemical solutions, one containing N molecules of chemical A and another containing M molecules of chemical B, are mixed together at time t = 0. The molecules from the two chemicals combine to form another chemical solution containing y (AB) molecules. The rate at which the AB molecules are formed, 
, is called the reaction rate and is jointly proportional to
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. Thus,
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where k is a constant (we assume the temperature of the chemical mixture remains constant during the interaction). Solve this differential equation with the side condition 
assuming that 
and 
.
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Hint: Use the identity
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What will be an ideal response?
Convert as indicated.26,000 lb to tons
A. 14 tons
B. 13
tons
C. 12 tons
D. 13 tons
Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form.(-5, 0); m = -7
A. y = 7x - 5 B. y = -7x - 35 C. y = -5x - 7 D. y = 5x - 7
Evaluate the expression.-7 + 8 ? 3
A. 32 B. 168 C. 17 D. 31