Solve the quadratic equation. Write the answer in simplest form.x2 + 49 = 0
A. {7}
B. {2401}
C. {-7, 7}
D. {-7i, 7i}
Answer: D
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Determine the area or volume as indicated. Use 3.14 for ? when necessary.
Find the volume.
A. 439.6 ft3 B. 3077.2 ft3 C. 769.3 ft3 D. 219.8 ft3
Solve the problem.A telephone costs $355. If the sales tax rate is 7%, how much tax is charged and what is the total price? Round your answers to the nearest cent.
A. $21.30, $376.30 B. $248.50, $603.50 C. $28.40, $383.40 D. $24.85, $379.85
Solve the problem. Round your answer to the nearest tenth.If $2000 is invested in an account that pays interest compounded continuously, how long will it take to grow to $4000 at 9%?
A. 10.8 years B. 6.2 years C. 7.7 years D. 8.0 years
Write as the sum and/or difference of logarithms. Express powers as factors.ln 
4/3, x > 2
A. 4ln (x + 5) - 3ln (x - 2) - 
ln (x - 8)
B. ln (x + 5) + ln (x - 2) + ln 4 - 16ln (x - 8) - ln 3
C. 
ln (x2 + 7x - 10) - 
ln (x - 8)
D. 
ln (x + 5) + 
ln (x - 2) - 
ln (x - 8)