Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14
B. -5
C. 0
D. 1
Answer: D
Mathematics
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Find the root. Assume that variables represent any real number.- 
A. -
B. x8
C. 
D. - x8
Mathematics
Find the sum.109 + 6 + (-9) + (-6)
A. 100 B. 112 C. 130 D. 118
Mathematics
Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = 4x2 + 2x - 2
A. maximum at 
B. minimum at 
C. maximum at 
D. minimum at 
Mathematics
Solve the problem.A merchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that can be sold for $70 a pound. How many pounds of the $60 coffee should be used?
A. 100 lb B. 150 lb C. 50 lb D. 75 lb
Mathematics