Write the expression in the standard form a + bi.
A. 
+ 
i
B. - 
+ 
i
C. 
+ 
i
D. - 
+ 
i
Answer: C
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Factor.15z2 + 11z - 12
A. (3z + 4)(5z - 3) B. (15z + 1)(z - 12) C. (15z + 4)(z - 3) D. (3z - 4)(5z + 3)
Without using a calculator, determine the value of the trigonometric function or state that the value is undefined.tan 
A. -1 B. undefined C. 0 D. 1
Uniformly accelerated motion. In a motion with a uniform acceleration, a displacement of an object is directly proportional to the square of the traveled time. The ball travels a distance of 196 meters by the time of 7 seconds. What distance does the ball travel in 13 seconds?
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Solve the problem.A weight attached to a spring is pulled down 3 inches below the equilibrium position. Assuming that the frequency of the system is 
cycles per second, determine a trigonometric model that gives the position of the weight at time t second.
A. y = 3cos 10t B. y = -3cos 10t C. y = 3cos 5t D. y = -3cos 5t