Solve the problem.A banquet dinner is being organized by a club. The members are to pay 20% of the actual cost of their dinner, with the club making up the difference. Club members are told that they are to pay $4 to attend. What is the actual cost of the dinner?
A. $21
B. $22
C. $18
D. $20
Answer: D
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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.xy - 9x + y - 6 = 0
A. 
u2 - y'2 - 4
u + 
v - 6 = 0 ; Hyperbola
B. 
u2 + 
v2 - 4
u + 5
v - 6 = 0 ; Ellipse
C. 
u2 - 4
u + 5
v - 6 = 0 ; Parabola
D. 
u2 - 
v2 - 4
u + 5
v - 6 = 0 ; Hyperbola
Solve the problem.The Perrones have saved $19,900 for a down payment. If a 6% down payment is required, what price house can they buy?
A. $1194 B. $3317 C. $119,400 D. $331,667
Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The lines 
, 
, and 
A. 
B. 
C. 
D. 
Find the limit.
2 sin 
A. 0 B. 4 C. -2 D. 2