Determine if the function is concave up or concave down in the first quadrant.y = x3/2
A. Concave up
B. Concave down
Answer: A
Mathematics
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Find the potential function f for the field F.F = 
i - 6j - 
k
A. f(x, y, z) = 
- 6y + C
B. f(x, y, z) = 
- 6y + C
C. f(x, y, z) = 
- 6 + C
D. f(x, y, z) = 
+ C
Mathematics
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Southwest Dry Cleaners believes that it will need new equipment in 9 years. The equipment will cost $26,000. What lump sum should be invested today at 12% compounded semiannually, to yield $26,000?
A. $15,212.33 B. $9108.94 C. $19,593.79 D. $15,440.52
Mathematics
Perform the indicated operations. Write the resulting polynomial in standard form.(7x - y)2
A. 49x2 - 7xy + y2 B. 49x2 - 14xy - 2y2 C. 49x2 - 14xy + y2 D. 49x2 + y2
Mathematics