The following table shows the cost C, in dollars, of taking k kids to a water park.
1 2 3 4
$43 $59 $75 $91?
Which formula below fits these data?
?
A. 
B. 
C. 
D. None of the above
Answer: C
Mathematics
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Rewrite the fraction with the denominator indicated.Write 
with a denominator of 21.
A. 
B. 
C. 
D. 
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Factor.y2r2 - 1
A. (yr - 1)2 B. (yr + 1)2 C. (yr + 1)(yr - 1) D. y2r2 - 1
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Perform the indicated row operations on the following matrix. 
(-2)R1 + R2 ? R2
A. 
B. 
C. 
D. 
Mathematics
Find an equation for the ellipse described.Center at (0, 0); focus at (0, 4); vertex at (0, -7)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics