Find the sum of the first n terms of the following arithmetic sequence.a1 = -7, d = 2; n = 5
A. 3
B. -15
C. -35
D. -10
Answer: B
Mathematics
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Use the vertical line test to determine whether the graph represents a function.
A. not a function B. function
Mathematics
Solve.Four squares with sides 3 in. long are cut from the corners of a rectangular metal sheet that has an area of 
The edges are bent up to form an open box with a volume of 
Find the dimensions of the box.
A. Height: 21 in.; length: 3 in.; width: 13 in. B. Height: 3 in.; length: 24 in.; width: 13 in. C. Height: 3 in.; length: 18 in.; width: 16 in. D. Height: 3 in.; length: 15 in.; width: 7 in.
Mathematics
Perform the indicated operation.
- 
A. 
B. - 
C. - 
D. -6
Mathematics
Solve the quadratic equation by completing the square.x2 + 8x = 28
A. {-2
, 2
}
B. {-4 - 2
, -4 + 2
}
C. {-4 - 2
, -4 + 2
}
D. {2
- 4, 2
+ 4}
Mathematics