The graph of an ellipse is given. Find the standard form of the equation of the ellipse. 
A. 
+ 
= 1
B. 
- 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
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Solve the problem.Find the centroid of the region cut from the first quadrant by the line 
.
A. 
= 
, 
= 
B. 
= 2, 
= 2
C. 
= 4, 
= 4
D. 
= 
, 
= 
The table lists data that are exactly linear. (i) Find the slope-intercept form of the line that passes through these data points. (ii) Predict y when x = -1.5 and 4.6. 
A. y = 2.8x - 1.7; y = -5.9, y = 11.18 B. y = 2.8x - 9.5; y = -13.7, y = 3.38 C. y = -2.8x + 9.5; y = 13.7, y = -3.38 D. y = 2.8x + 9.5; y = 5.3, y = 22.38
The atmospheric pressure P in pounds per square inch (psi) is given by the formula below, where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.16 psi, what is its altitude?
?
?
Please round your answer to the nearest foot.
?
__________ ft
Fill in the blank(s) with the appropriate word(s).
Find the domain of f. Write your answer in interval notation.f(x) = 
A. (-?, 0)
B. (-?, ?)
C. 
D. (0, ?)