You are given the graph of a function f. Determine the intervals where f is concave upward.?
?
?
A. 
B. ?
C. ?
D. ?
Answer: D
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Part of $2,200 is invested at 12%, another part at 13%, and the remainder at 14%. The total yearly income from the three investments is $295. The sum of the amounts invested at 12% and 13% equals the amount invested at 14%. Determine how much is invested at each rate.
A. $800 at 12%, $300 at 13%, $1,100 at 14% B. $200 at 12%, $900 at 13%, $1,100 at 14% C. $200 at 12%, $1,100 at 13%, $900 at 14% D. $100 at 12%, $1,000 at 13%, $1,100 at 14% E. $300 at 12%, $1,000 at 13%, $900 at 14%
Solve the problem.The graph below shows the first derivative of a function y = f(x). Select a possible graph f that passes through the point P. f'
A. 
B. 
C. 
D. 
Write an equivalent double integral with the order of integration reversed.
A. 
B. 
C. 
D. 
Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.
A. 
B. x16
C. -x16
D. 