Find all complex solutions.x4 - 49 = 0
A. 
B. 
, i
C. ± 
D. ± 
, ± i
Answer: D
Mathematics
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Write the first four terms of {an}.an = 
A. 
, 
, 
, 
B. -1, 1, 
, 
C. 1, 
, 
, 
D. 0, 
, 
, 
Mathematics
Find the equation for the level surface of the function through the given point.f(x, y, z) = 
, (2, 6, 3)
A. 
= 
B. 
= 
C. 
= 
D. 42
= 24x2y
Mathematics
Solve.There are currently 76 million cars in a certain country, decreasing by 3.1% annually. How many years will it take for this country to have 59 million cars? (Round to the nearest year.)
A. 17 yr B. 5 yr C. 8 yr D. 91 yr
Mathematics
Subtract the fractions. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Mathematics