Evaluate the expression using a rule for exponents.141
A. -1
B. 0
C. 14
D. 1
Answer: C
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Determine the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (2, -3)
foci at (2 + 
, -3), (2 - 
, -3)
vertices at (-9, 2), (3, 2)
B. center at (-3, 2)
foci at (-3 + 
, -3), (-3 - 
, -3)
vertices at (6, 2), (-6, 2)
C. center at (-3, 2)
foci at (- 
, 2), (
, 2)
vertices at (6, 2), (-6, 2)
D. center at (-3, 2)
foci at (-3 + 
, 2), (-3 - 
, 2)
vertices at (-9, 2), (3, 2)
Write the number as the product of a real number and i.
A. 5i
B. 5
C. -5i
D. -5
Find the mean.Jill kept track of the number of hours she spent exercising each week. The results for four months are listed below. Find the mean number of hours Jill spent exercising per week. Round your answer to one decimal place if necessary. 6.7 7.4 7.5 8.6 7.3 6.7 8.7 7.5 8.2 6.7 8.6 8.3 8.8 7.4 7.4 8.2 7.3 8.7
A. 8.2 B. 7.8 C. 7.4 D. 8.0
Identify the sequence as geometric, arithmetic, or neither.2, 3, 4, 5, . . .
A. arithmetic B. neither C. geometric