Solve.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 26 ft and the vertical clearance must be 13 ft at a point 21 ft from the center. Find an equation for the ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
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Use an integer or rational number to express the number representing change.On a cloudy day, the water temperature in the swimming pool drops 3 degrees.
A. -3 B. 3
Provide an appropriate response.Results of a survey of fifty students indicate that 30 like red jelly beans, 29 like green jelly beans, and 17 like both red and green jelly beans. How many of the students surveyed like neither red nor green jelly beans?
A. 17 B. 13 C. 8 D. 12
Use a right triangle to write the expression as an algebraic expression. Assume that x is positive and in the domain of the given inverse trigonometric function.sin(tan-1 
)
A. 
B. 
C. 
D. x
Solve.Kimberly Ann takes out a loan to buy a fixer-upper house. She then spends $3754 in repairs and improvements. She sells the house for $85,660 but pays the new owners $2276 in closing costs. If the payoff for the loan that Kimberly Ann took out to buy the house is $74,072, what is her net? Is it a profit or loss?
A. -$161,215; profit B. -$71,796; profit C. -$161,210; loss D. $5558; profit