Add the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-3 + 8
A. -11
B. 11
C. 5
D. -5
Answer: C
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Solve the problem. Round to the nearest cent.Find the deposit required to accumulate $4000 after investing 6 years in an account that pays an APR of 4% compounded semiannually. How much is earned in interest?
A. $3153.97; $846.03 B. $5072.97; $1072.97 C. $3161.26; $838.74 D. $0.97; $3999.03
Find 
. Write the answer in polar form with the argument between 0° and 360°z1 = 10(cos 45° + i sin 45°), z2 = 5(cos 15° + i sin 15°)
A. 2(cos 30° + i sin 30°)
B. 2(cos 45° + i sin 45°)
C. 
(cos 45° + i sin 45°)
D. 
(cos 30° + i sin 30°)
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
[3 ln (x + 6) - ln x - ln(x2 - 1)]
A. ln 
B. ln 
C. ln 
D. ln 
Find the area of the triangle by using Heron's formula. Round the answer to the nearest tenth. All sides are measured in inches.a = 151, b = 165, c = 174
A. 14,296.5 sq in. B. 17,155.8 sq in. C. 730.7 sq in. D. 11,437.2 sq in.