Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Answer: B
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Solve.The speeds of pulleys are inversely proportional to the lengths of their diameters. The diameter of pulley A is 18 cm and the diameter of pulley B is 8 cm. If pulley B turns at 342 rpm's, how fast does pulley A turn?
A. 749.3 rpm's B. 769.5 rpm's C. 152 rpm's D. 174 rpm's
Solve the problem.Use determinants to write an equation in slope-intercept form of the line that passes through the points 
A. y = 3x - 1 B. y = 3x + 1 C. y = -3x - 1 D. y = -3x + 1
Find the slope-intercept form of the equation of the line with the given properties.Horizontal; containing the point (-2.4, -0.5)
A. y = -2.4 B. y = 0 C. y = 2.9 D. y = -0.5
Determine the correct factored form of the given equation.2x2 + 2x - 24
A. 2(x - 3)(x + 4) B. (x + 3)(x - 4) C. 2(x - 3)(x - 4) D. 2(x + 3)(x - 4)