Use an inverse matrix to solve the given system of equations. 5x + 4y = 8-4x + 2y = -22
A. (4, -3)
B. (3, -4)
C. (-4, 3)
D. (-3, 4)
Answer: A
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Use the appropriate form of the percentage formula. Round division to the nearest hundredth if necessary.Find 33% of 1500.
A. 49,500 B. 49.5 C. 495 D. 4950
Solve.A rock falls from a tower that is 192 ft high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)? Round to the nearest tenth.
A. 3.5 sec B. 12.3 sec C. 13.9 sec D. 2304 sec
Solve the problem.A searchlight is shaped like a paraboloid of revolution. If the light source is located 3 feet from the base along the axis of symmetry and the opening is 10 feet across, how deep should the searchlight be?
A. 6.3 ft B. 8.3 ft C. 0.5 ft D. 2.1 ft
Factor completely. If the polynomial cannot be factored, say it is prime.14y2 + 63y - 35
A. (14y - 7)(y + 5) B. 7(2y + 1)(y - 5) C. 7(2y - 1)(y + 5) D. prime