Tell whether the given rational expression is proper or improper. If improper, rewrite it as the sum of a polynomial and a proper rational expression.
A. proper
B. improper; 
+ 
C. improper; 
D. improper; 
- 
Answer: A
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Solve the problem.Given the velocity and initial position of a body moving along a coordinate line at time t, find the body's position at time t.v = cos 
t, s(0) = 1
A. s = 2? sin 
t
B. s = 
sin 
t + ?
C. s = 
sin 
t
D. s = sin t
Solve the problem.Use the formula C = 
(F - 32) to find the Celsius temperature (C) equivalent to the given Fahrenheit temperature (F).F = 230°
A. C = 110° B. C = 446° C. C = 356.4° D. C = 145.6°
Sketch the graph of the quadratic function. Identify the vertex and axis of symmetry.f(x) = (x - 1)2
A. vertex: (0, -1)
axis of symmetry: x = 0
B. vertex: (0, 0)
axis of symmetry: x = 0
C. vertex: (1, 0)
axis of symmetry: x = 1
D. vertex: (-1, 0)
axis of symmetry: x = -1
Solve the problem.Each ounce of gold is worth $45.(i) Complete the table to find an expression that describes the total value (in dollars) of n ounces of gold. Show the arithmetic to help you see a pattern.(ii) Evaluate the expression you found in part (i) for n =8. What does your result mean in this situation?
A. (i) 
(ii) 360; $360 is the total value of 8 ounces of gold priced at $45 per ounce.
B. (i) 
(ii) 37; $37 is the total value of 8 ounces of gold priced at $45 per ounce.
C. (i) 
(ii) 53; $53 is the total value of 8 ounces of gold priced at $45 per ounce.
D. (i) 
(ii) 5.63; $5.63 is the total value of 8 ounces of gold priced at $45 per ounce.