Solve the problem.Walt made an extra $10,000 last year from a part-time job. He invested part of the money at 7% and the rest at 9%. He made a total of $760 in interest. How much was invested at 9%?
A. $5000
B. $10,000
C. $3000
D. $7000
Answer: C
Mathematics
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For the curve r(t), write the acceleration in the form aTT + aNN.r(t) = (cosh t)i + (sinh t)j + tk
A. a = (- 
sinh t)T + N
B. a = (sinh t)T + N
C. a = (-sinh t)T + N
D. a = (
sinh t)T + N
Mathematics
Find the area of the region specified by the integral(s).
+ 
A. 8
B. 
C. 
D. 
Mathematics
Match the system of inequalities with the appropriate graph.2x + y ? 4 x - 1 ? 0
A. 
B. 
C. 
D. 
Mathematics
Multiply to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.4
? 4
A. 16
B. 23
C. 22
D. 21
Mathematics