Write one or more inequalities that describe the set of points.The interior of the sphere x2 + y2 + x2 = 36
A. x2 + y2 + x2 ? 36
B. x2 + y2 + x2 ? 6
C. x2 + y2 + x2 < 36
D. x2 + y2 + x2 < 6
Answer: C
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Solve the problem using your calculator.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. Use linear regression to find a linear function that predicts a student's course grade as a function of the number of hours spent in lab. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. y = 44.3 + 0.930x B. y = 1.86 + 88.6x C. y = 0.930 + 44.3x D. y = 88.6 - 1.86x
Solve the system by the substitution method or the addition method.
A. (9, -6) B. (12, 3) C. (3, -5) D. (5, 3)
Change the word statement to an equation. Use x as the variable.- 
of a number plus 14 equals 13.
A. - 
x = 14 + 13
B. - 
x + 14 = 13
C. - 
(x + 14) = 13
Find the standard form of the equation of the ellipse and give the location of its foci.
Center at (-3, 3)
A. 
+ 
= 1
foci at (- 
, 3) and (
, 3)
B. 
+ 
= 1
foci at (-3 + 
, 3) and (-3 - 
, 3)
C. 
+ 
= 1
foci at (-3 + 
, -3) and (-3 - 
, -3)
D. 
+ 
= 1
foci at (3 + 
, -3) and (3 - 
, -3)