Use a calculator to help solve the equation. Round approximate answers to three places.2x + 
= 
A. {-1.92}
B. {-1.52}
C. {-1.22}
D. {-0.32}
Answer: B
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Solve the problem.The specific gravity s of a sphere of radius r that sinks to a depth h in water is given by s = 
.Find the depth to which a spherical buoy of radius 4.2 cm sinks if s = 0.50. Round your answer to the nearest hundredth.
A. 15.67 cm B. 4.2 cm C. 11.47 cm D. 3.07 cm
Solve the problem.If $3500 is invested in an account that pays interest compounded continuously, how long will it take to grow to $10,500 at 6%? Round to the nearest tenth.
A. 6.6 years B. 11.0 years C. 18.3 years D. 18.4 years
Solve the problem.What is the ratio of the surface areas for a pair of similar hemisphere when the ratio of the radii is 3 : 4?
A. 9 : 16 B. 3 : 4 C. 27 : 64 D. Not enough information given
Find a rectangular equation for the curve and describe the curve.x = 
, y = 
t; -2 ? t ? 2
A. x = 
; portion of an ellipse
B. x = 
; portion of an ellipse
C. x = 
; portion of an ellipse
D. x = 
; portion of a circle with radius 2