Approximate the value using a calculator. Express answer rounded to three decimal places.4 
A. 7.103
B. 5.657
C. 8.000
D. 4.000
Answer: A
Mathematics
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Mathematics
Write the first four terms of the geometric sequence with the given values.a1 = 
, r = 4
A. 
, 
, 
, 
B. 2, 8, 16, 32
C. 
, 
, 
, 
D. 
, 
, 
, 
Mathematics
Solve the problem.The efficiency e (in percent) of an automobile engine is given by 
where s is the speed 
of the car. Find the average efficiency with respect to the speed for 
to 
A. 32.8% B. 34.5% C. 29.8% D. 64.4%
Mathematics
Use Pascal's triangle to expand the binomial.(x - 3)4
A. x4 - 12x3 + 54x2 + 12x + 81 B. x4 - 12x3 + 54x2 - 108x + 81 C. x4 - 3x3 + 54x2 - 54x + 81 D. x4 - 12x3 - 54x2 - 108x + 81
Mathematics