Solve the problem.A $156,000 trust is to be invested in bonds paying 7%, CDs paying 5%, and mortgages paying 9%. The sum of the bond and CD investment must equal the mortgage investment. To earn an $11,580 annual income from the investments, how much should the bank invest in bonds?
A. $31,000
B. $78,000
C. $45,000
D. $33,000
Answer: D
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Use a grapher to graph the function.The charge y on a certain capacitor as a function of time is given by 
Charge is measured in coulombs, and time is measured in seconds. Sketch two cycles of y as a function of t. Label the point on the horizontal axis which represents the end of the second cycle.
A. 
B. 
C. 
D. 
Find the sum.89 + 6 + 93.57 + 47.235
A. 235.805 B. 235.815 C. 235.905 D. 236.805
Fill in the blank with the appropriate measurement relationship.
qt = 1 gal
Fill in the blank(s) with the appropriate word(s).
Solve the problem using your calculator.Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are shown below. Use linear regression to find a linear function that predicts a student's score on Test B as a function of his or her score on Test A.
A. y = -0.930 + 19.4x B. y = -19.4 - 0.930x C. y = 0.930 - 19.4x D. y = 19.4 + 0.930x