Write the number in trigonometric form. Let 0 ? ? < 2?.-4 + 4
i
A. 4
B. 8
C. 8
D. 4
Answer: C
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Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.30 L = 
gal
A. 7.1 B. 7.9 C. 31.8 D. 13.5
Solve the problem.Zach is planning to invest up to $45,000 in corporate and municipal bonds. The least he will invest in corporate bonds is $7000 and he does not want to invest more than $25,000 in corporate bonds. He also does not want to invest more than $26,087 in municipal bonds. The interest is 8.4% on corporate bonds and 6.4% on municipal bonds. This is simple interest for one year. What is the maximum income?
A. $23,380 B. $3380 C. $5820 D. $28,380
Perform the indicated operation and simplify.
- 
A. 
B. 
C. 
D. 
The function 
represents the relationship of the time in years, t, and the amount of radium-226, y. Find the half life of radium-226 in years. Round to the nearest tenth.
A. 1589.8 years B. 1589.7 years C. 159.0 years D. 158.9 years E. None of these