Solve the system of equations by the substitution method. Check your solutions.
A. {(8, -5)}
B. {(-8, 5)}
C. {(8, 5)}
D. {(-8, -5)}
Answer: C
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Identify the distribution as symmetric, left-skewed, or right-skewed.Number of days worked last year by adult males in a U.S. city which has a low unemployment rate
A. Symmetric B. Right-skewed C. Left-skewed
Solve the problem.
The function f computes the annual interest paid on savings of x dollars with an interest rate of 9%. The graph of f and the horizontal line 
are shown in the figure. Determine the savings amounts that result in (i) an annual interest less than $3.15 and (ii) an annual interest of $3.15 or more.
A. $35 or more; $35 B. Between $0 and $35; $35 or more C. Between $5 and $35; $35 or more D. $35 or less; between $35 and $40
Given matrix A, find the indicated cofactor.Find A21.A = 
A. 4 B. -4 C. -15 D. 15
Provide an appropriate response.If you graphed x ? 6, would you use an open or closed circle? Explain why.
What will be an ideal response?