Find all real and complex solutions of the quadratic equation 
.
A. 
B. 
C. 
D. 
E. 
Answer: D
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Solve the problem.A boat is towed toward a dock by a cable attached to a winch that stands 15 ft above the water level (see figure). Let ? be the angle of elevation of the winch and let z be the length of the cable as the boat is towed toward the dock. Compute 
when 
A. 
= -0.00030
B. 
= -0.00418
C. 
= -0.26287
D. 
= -0.00446
Solve.The amount of simple interest earned on an investment over a fixed amount of time is jointly proportional to the principle invested and the interest rate. A principle investment of $3400.00 with an interest rate of 8% earned $1360.00 in simple interest. Find the amount of simple interest earned if the principle is $1400.00 and the interest rate is 5%.
A. $850.00 B. $350.00 C. $35,000.00 D. $560.00
Determine the value of the trigonometric function of ? using the given information.If sin ? = - 
and tan ? = 
, then determine the value of cos ?.
A. 
B. 
C. - 
D. - 
Solve by completing the square.x2 + 4x = 3
A. -1 ± 
B. -2 ± 2
C. -2 ± 
D. 2 + 