Solve the problem.The temperature at 5:00 was -7° C. Four hours later, it was -10° C. What was the change in temperature?
A. 17° C
B. -3° C
C. 3° C
D. -17° C
Answer: B
Mathematics
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Solve the problem.The height in meters of women of a certain tribe is approximated by h = 0.52 + 2 log(t/3) where t is the woman's age in years and 1 ? t ? 20. Estimate the height (to the nearest hundredth) of a woman of the tribe 4 years of age. (Round to the nearest hundredth.)
A. 0.96 m B. 0.52 m C. 1.12 m D. 0.77 m
Mathematics
Reduce the rational expression to lowest terms.
A. 
B. 
C. 
D. 
Mathematics
Solve the double inequality.-38 ? -5z + 2 or -5z + 2 ? -8
A. 2 ? z or z ? 8 B. -8 < z or z < -2 C. 2 < z or z < 8 D. -8 ? z or z ? -2
Mathematics
Solve the equation.1 - 
= 
A. 
B. {- 
}
C. {-2}
D. {2}
Mathematics