Determine whether B is the inverse of A.A = 
, B = 
A. Yes
B. No
Answer: A
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Solve the equation for the specified variable.I = 
for n
A. n = 
B. n = 
C. n = 
D. n = IR(Ir - E)
Graph the system of inequalities.x + 2y ? 2x + y ? 0
A. 
B. 
C. 
D. 
Find the special products using patterns.(5a + 9c)(5a - 9c)
A. 25a2 - 81c2 B. 25a2 + 90ac - 81c2 C. 5a2 - 9c2 D. 25a2 - 90ac - 81c2
Solve the problem.A retired couple has $170,000 to invest to obtain annual income. They want some of it invested in safe Certificates of Deposit yielding 5%. The rest they want to invest in AA bonds yielding 11% per year. How much should they invest in each to realize exactly $16,300 per year?
A. $130,000 at 12% and $60,000 at 5% B. $120,000 at 5% and $70,000 at 12% C. $140,000 at 12% and $50,000 at 5% D. $130,000 at 5% and $60,000 at 12%