Solve the problem.A $114,000 trust is to be invested in bonds paying 8%, CDs paying 5%, and mortgages paying 10%. The bond and CD investment must equal the mortgage investment. To earn an $9210 annual income from the investments, how much should the bank invest in bonds?
A. $20,000
B. $35,000
C. $57,000
D. $22,000
Answer: D
Mathematics
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Solve.The charge q (in coulombs) delivered by a current i (in amperes) is given by 
where t is the time (in seconds). A damped-out periodic wave form has current given by 
Find a formula for the charge delivered over time t.
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Mathematics
Decide whether the problem is an equation or an expression.9(4x + 4) - 3(7x - 7)
A. Equation B. Expression
Mathematics
What number should be added to complete the square of the expression?x2 - 
x
A. 
B. - 
C. 
D. - 
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Determine if the graph of the function is concave up or concave down.f(x) = 2x2 + 2x - 4
A. Concave up B. Concave down
Mathematics