Solve the equation for solutions in the interval [0°, 360°).sin 2? + cos 2? = 1
A. ? = 0°, 90°, 180°, 270°
B. ? = 0°
C. ? = 0°, 45°, 180°, 225°
D. ? = 33°, 57°, 123°, 147°, 213°, 237°, 303°
Answer: C
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Solve the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate.B = 15.8°C = 102.9°b = 33.7
A. A = 61.3°, a = 110.6, c = 122.6 B. A = 59.3°, a = 122.6, c = 110.6 C. A = 59.3°, a = 120.6, c = 108.6 D. A = 61.3°, a = 108.6, c = 120.6
Solve the problem.The table below gives the violent crime rate (per 100,000 people) for a particular state every five years from 1970 to 2010. 
Use technology to find the cubic function that is the best fit for this data, where x is the number of years after 1970. Round to five decimal places.
A. y = -0.00034x3 + 0.01950x2 - 0.04893x + 4.79798 B. y = 4.79798x3 - 0.04893x2 + 0.01950x - 0.00034 C. y = -0.00053x3 + 0.02460x2 - 0.01893x + 5.79798 D. y = -0.00024x3 + 0.02250x2 - 0.03111x + 4.68687
Use the graph to estimate any solutions of the system.x2 + y2 = 4y = 2 + x
[-5, 5] by [-5, 5]
A. (2, 0) and (-2, 0) B. (0, 2) and (-2, 0) C. (0, 2) and (2, 0) D. (0, 2) and (0, -2)
Use the echelon method to solve the system of two equations in two unknowns. 7x + 8y = 8-2x + 4y = 4
A. (-1, 2) B. (0, 2) C. (0, 1) D. No solution