Solve the problem.Helen Weller invested $13,000 in an account that pays 12% simple interest. How much additional money must be invested in an account that pays 15% simple interest so that the average return on the two investments amounts to 13%?
A. $9000
B. $13,000
C. $6500
D. $10,000
Answer: C
Mathematics
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Factor.p4 - 11p2 + 24
A. (p2 - 3)(p2 - 8) B. (p2 - 3)(p2 + 8) C. (p2 - 24)(p2 - 1) D. p2(p - 3)(p - 8)
Mathematics
Solve the equation. Express irrational answers in exact form and as a decimal rounded to 3 decimal places.
x = 81 - x
A. 
? 0.790
B. 
? 0.593
C. 
? 1.688
D. ln 
- ln 8 ? -2.927
Mathematics
Find and simplify the difference quotient 
for the given function.f(x) = 7
A. 1
B. 1 + 
C. 0
D. 7
Mathematics
Use the Factor Theorem to determine whether x - c is a factor of f(x).f(x) = x4 - 5x2 - 36; x - 6
A. Yes B. No
Mathematics