Solve the problem.An airplane is flying in the direction 31° east of south at 873 km/hr. Find the component form of the velocity of the airplane, assuming that the positive x-axis represents due east and the positive y-axis represents due north.
A. 
B. 
C. 
D. 
Answer: B
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Give a verbal representation for the given function. f(x) = 
+ 4. Let y = f(x).
A. To obtain y: Add 4 to the opposite of x. B. To obtain y: If x is positive or equal to zero, add 4 to x. If x is negative, add 4 to the opposite of x. C. To obtain y: Add 4 to x. D. To obtain y: Multiply x by -1, then add 4 to the result.
Solve the problem.Marty's Tee Shirt & Jacket Company is to produce a new line of jackets with a embroidery of a Great Pyrenees dog on the front. There are fixed costs of $570 to set up for production, and variable costs of $30 per jacket. Write an equation that can be used to determine the total cost, C(x), encountered by Marty's Company in producing x jackets, and use the equation to find the total cost of producing 118 jackets.
A. $4122 B. $4102 C. $4090 D. $4110
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = - 
, 
< ? < ?Find tan(2?).
A. 
B. 
C. 
D. 
Use the row reduction algorithm to transform the matrix into echelon form or reduced echelon form as indicated.Find the reduced echelon form of the given matrix. 
A. 
B. 
C. 
D. 