Solve the problem.A bridge with a semi-elliptical arch extends over a river as shown. Find an equation of the ellipse that represents the arch of the bridge.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
Mathematics
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Solve the equation by factoring.x2 + 2x - 63 = 0
A. {9, -7} B. {-9, 7} C. {-9, 1} D. {9, 7}
Mathematics
Solve the equation.
= 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.During the month of January, the depth, d, of snow in inches at the base of one ski resort could be approximated by 
where t is the number of days since December 31st. Graph the equation and use the graph to estimate the depth of snow on January 26th.
A. 44 in. B. 26 in. C. 18 in. D. 23 in.
Mathematics
Set up the system of equations used to find m and b of the linear regression line for the points 
and 
. Do not solve.
What will be an ideal response?
Mathematics