Multiply. Express your answer in standard form.(2 - i)(-6i)
A. -6 - 12i
B. 6 + 12i
C. -6 + 12i
D. 6 - 12i
Answer: A
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Find the phase shift of the function.y = 2 sin (2?x - 3)
A. 
units to the right
B. 3 units to the right
C. 3 units to the left
D. 
units to the left
Solve the equation.log (4x - 3) - log 9x = 3
A. 
B. ?
C. 
D. 
Solve the problem.On Anne's bicycle, the ratio of pedal turns to rear-wheel turns in second gear is 4 to 7. If her rear wheel turns 756 times per mile, how many times does she turn the pedal in one mile?
A. 1323 times B. 760 times C. 432 times D. 763 times
Solve the problem.Suppose that a metal block is cooling so that its temperature T(in °C) is given by 
where t is in hours. How long has the cooling been taking place if the block now has a temperature of 700°C?
A. 4 hr B. 1 hr C. 0.5 hr D. 2 hr