Decide whether the figure is convex or concave.
A. Convex
B. Concave
Answer: A
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Solve the problem.A bullet is fired with a muzzle velocity of 1455 ft/sec from a gun aimed at an angle of 27° above the horizontal. Find the horizontal component of the velocity.
A. -425.1 ft/sec B. 660.6 ft/sec C. 1296 ft/sec D. 741.4 ft/sec
Solve the problem.Find the vector from the origin to the center of mass of a thin triangular plate (uniform density) whose vertices are A(10, 4, 2), B(7, 9, 5), and C(2, 8, 10).
A. 
i + 7j + 
k
B. 
i - 
j - 8k
C. 
i - 1j - 
k
D. 
i - 
j - 
k
Solve the problem.A salesperson earned $350 a week plus a bonus of $18 for each service contract sold. What is the weekly pay if 6 service contracts were sold?
A. $350 B. $558 C. $458 D. $108
Solve the problem.Andy has 12 coins made up of quarters and half dollars, and their total value is $5.25. How many quarters does he have?
A. 9 quarters B. 11 quarters C. 8 quarters D. 3 quarters