Find the exact value of the sum.sin 75° - sin 15°
A. 
B. - 
C. 
D. 
Answer: D
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Use least common multiple or greatest common divisor to solve the problem.Three clocks chime every 14 minutes, 22 minutes, and 77 minutes, respectively. If the three clocks chime together, how much time must pass before they will chime together again?
A. 113 minutes B. 308 minutes C. 1694 minutes D. 154 minutes
Determine if the given number is a solution to the given equation. Answer yes or no.Is 11 a solution to p - 6 = 5 ?
A. yes B. no
Graph the solution set of the system of inequalities or indicate that the system has no solution.x2 + y2 ? 648x + 5y ? 40 
A. 
B. 
C. 
D. 
Graph the quadratic equation using its properties. Identify the vertex, intercepts, and axis of symmetry.y = -x2 - 2x - 1
A. vertex: (-1, 0); x-intercept: -1;
y-intercept: 1; axis of symmetry: x = -1
B. vertex: (1, 0); x-intercept: 1;
y-intercept: 1; axis of symmetry: x = 1
C. vertex: (-1, 0); x-intercept: -1;
y-intercept: -1; axis of symmetry: x = -1
D. vertex: (1, 0); x-intercept: 1;
y-intercept: -1; axis of symmetry: x = 1