Simplify the expression by combining like terms.5.2k - 1.6 - 3.8k + 3 + 2.9k
A. 4.3k + 1.4
B. 4.3k - 1.4
C. 11.9k + 1.4
D. 4.3k + 4.6
Answer: A
Mathematics
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Solve the problem.The temperature at 5 p.m. on January 27 was -5° Fahrenheit. By 8 p.m. the temperature had risen 25 degrees. Find the temperature at 8 p.m.
A. 20°F B. -30°F C. 30°F D. -20°F
Mathematics
Determine the domain and range of the function. Then graph it.f(x) = -
A. domain = [-3, ?), range = (-?, 0]
B. domain = [0, ?), range = [-3, ?)
C. domain = [3, ?), range = [0, ?)
D. domain = [0, ?), range = [3, ?)
Mathematics
Convert the units.409 g = 
mg
A. 40,900 mg B. 0.0409 mg C. 0.409 mg D. 409,000 mg
Mathematics
Solve the equation by completing the square.x2 + 3x - 9 = 0
A. 
B. 
C. {-3 - 3
, -3 + 3
}
D. 
Mathematics