Find all solutions if 
. Give your answers in radians using exact values only.
?
What will be an ideal response?
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Rotate the coordinate axes to change the given equation into an equation which has no cross product (xy) term. Identify the graph of the equation as a hyperbola, ellipse, parabola, a straight line, or parallel lines.3xy = 9
A. u2 + 
v2 - 9 = 0; Ellipse
B. 
u2 - 
v - 9 = 0; Parabola
C. 
u2 + v2 + 
u - 
v - 9 = 0; Ellipse
D. 
u2 - 
v2 - 9 = 0; Hyperbola
Solve the problem.A trust account manager has $300,000 to be invested in three different accounts. The accounts pay 5%, 6%, and 8%, and the goal is to earn $18,000. Assuming that x dollars are invested at 5%, y dollars are invested at 6%, and z dollars are invested at 8%, find x in terms of z.
A. x = z B. x = 300,000 - 3z C. x = 100,000 + z D. x = 2z
Solve the equation on the interval 0 ? ? < 2?.cos2 ? + 2 cos ? + 1 = 0
A. 
B. {2?}
C. 
D. {?}
Solve the problem.A bank loaned out $55,000, part of it at the rate of 
per year and the rest at a rate of 
per year. If the interest received was $5910, how much was loaned at 
A. $26,000 B. $25,000 C. $29,000 D. $30,000