Solve the system using the inverse matrix method.
A. x = -10, y = 40, z = -26; (-10, 40, -26)
B. x = -8, y = 16, z = 4; (-8, 16, 4)
C. x = -24, y = 34, z = 18; (-24, 34, 18)
D. x = -6, y = -8, z = -6; (-6, -8, -6)
Answer: A
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Find the product.
A. x2 + 9x - 7
B. x2 - 
C. x2 - 9x - 7
D. x2 - 9
Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Multiply.(9 - x6)(9 + x6)
A. 81 - x12 B. 81 + x6 C. 81 - x36 D. 81 - x6
Solve the problem.When a tow truck is called, the cost of the service is given by the linear function 
, where y is in dollars and x is the number of miles the car is towed. Find and interpret the slope and y-intercept of the linear equation.
A. m = 50; The cost of the service increases $50 every mile the car is towed. y-intercept: 3; The cost of the service is $3 if the car is not towed. B. m = 3; The cost of the service increases $3 every mile the car is towed. y-intercept: 50; The cost of the service is $50 if the car is not towed. C. m = 3; The number of miles the car is towed increases 3 miles for every dollar spent on the service. y-intercept: 50; The tow truck will tow the car 50 miles for no cost. D. m = 50; The number of miles the car is towed increases 50 miles for every dollar spent on the service. y-intercept: 3; The tow truck will tow the car 3 miles for no cost.