Find the functions 
?
, 
?
A. 
?, 
, 
, 
B. 
??, 
, 
, 
C. 
, 
, 
, 
?
D. 
??, 
, 
, 
E. 
?, 
, 
, 
?
Answer: C
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Solve the problem.A railroad tunnel is shaped like half of an ellipse. The height of the tunnel at the center is 11 ft and the vertical clearance must be 9 ft at a point 20 ft from the center. Find an equation for the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Calculate the total amount due to the IRS from the firm.St. Luke's Hospital collected $2324.25 FICA, $543.57 Medicare, and $1930.62 federal withholding tax from employees.
A. $4798.44 B. $7666.26 C. $7122.69 D. $5342.01
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Express as a single logarithm.4logax - 
logay + 
logaw - 3logaz
A. loga 
B. loga (4x - 
y + 
w - 3z)
C. loga 
D. loga 