Solve the equations.x2 = 
A. 
B. ± 
C. ± 
D. 
Answer: B
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Find the local extrema of the function, if they exist.f(x) = -7x2 - 2x - 9
A. Local maximum at 
B. Local minimum at 
C. Local maximum at 
D. Local maximum at 
Find the balance due on the maturity date of the note. Find the total amount of interest paid on the note. Use the United States Rule.Principal: $167Interest: 12%Time (days): 30Partial payment: $50 on day 20
A. $121.40; $4.40 B. $119.60; $2.60 C. $120.70; $3.70 D. $118.50; $1.50
Find the graph that matches the given system of equations.3x + y = -15y = 3x + 9
A. 
B. 
C. 
D. 
A service club wants to publish a directory of its members. Some investigation shows that the cost of typesetting and photography will be $900, and the cost of printing each directory will be $1.00. Find the mean cost per directory if 200 directories are printed. ?
A. $1.75 B. $5.50 C. $1.50 D. $2.75 E. $6.50