Find z1z2. Write your answer in standard polar form with the argument in radians.z1 = 2(cos 39° + i sin 39°), z2 = 5(cos 6° + i sin 6°)
A. 7(cos 234° + i sin 234°)
B. 7(cos 45° + i sin 45°)
C. 10(cos 33° + i sin 33°)
D. 10(cos 45° + i sin 45°)
Answer: D
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Multiply using the FOIL method.(0.4 - 8a)(0.5 + 3a)
A. 2 - 2.8a - 24a2 B. 0.2 - 2.8a - 0.24a2 C. 0.2 - 2.8a - 24a2 D. 0.2 + 2.8a - 24a2
Use the graph of f(x) = 
x - x5 and translations of graphs to sketch the graph of the equation. 
y = -2f(x)
A. 
B. 
C. 
D. 
Solve the problem.A race car driver's speed is clocked at 140.399 mph at the end of her first lap, and at 165.743 mph at the end of the next lap. How much faster was she driving at the end of the second lap than at the end of the first?
A. 25.444 mph B. 25.354 mph C. 25.344 mph D. 24.344 mph
Use dimensional analysis and the exchange rate below to convert. Round to the nearest hundredth, if necessary. 
Convert 800 £ (Great Britain pound) into U.S. dollars.
A. $533.97 B. $829.36 C. $1,198.55 D. $771.68