Solve the problem.
Karen is driving a delivery truck on a straight road. The graph shows the distance y in kilometers that Karen is from Store A after x hours. (i) Is Karen traveling toward or away from Store A? (ii) Find the slope of the line.
A. Toward; slope is -15.
B. Away; slope is 60.
C. Toward; slope is -30.
D. Away; slope is 15.
Answer: A
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Determine whether the system of equations is consistent with independent equations, consistent with dependent equations, or inconsistent. How many solutions does the system have?
A. Consistent with dependent equations; infinite number of solutions B. Inconsistent; no solution C. Consistent with independent equations; one solution
Use graphical methods to solve the linear programming problem.Minimize z = 4x + 5y subject to: 2x - 4y ? 10 2x + y ? 15 x ? 0 y ? 0
A. Minimum of 20 when x = 5 and y = 0 B. Minimum of 75 when x = 0 and y = 15 C. Minimum of 39 when x = 1 and y = 7 D. Minimum of 33 when x = 7 and y = 1
Find the domain of the logarithmic function.f(x) = log9(x2 - 10x + 25)
A. (5, ?) B. (-?, 5) ? (5, ?) C. (-5, ?) D. (-?, 0) ? (0, ?)
Solve the problem.The total resistance R due to two resistances connected in parallel is given by: R = 
.Use partial-fraction decomposition to write 
in terms of partial fractions.
A. 
= 
+ 
B. 
= 
+ 
C. 
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D. 
= 
+ 