Multiply.(6x3)(-4x2)(-7x5)
A. -168x30
B. 168x30
C. 168x10
D. -168x10
Answer: C
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Solve the problem.Brand X copier advertises that its copiers run 10% longer between service calls than its competitor. If Brand X copiers run 67,300 copies between services, how many copies would the competitor run?
A. 35,421 copies B. 61,182 copies C. 74,030 copies D. 60,570 copies
Find all specified roots.Cube roots of -8i
A. 2i, - 
- i, 
- i
B. -2i, 
- i, 
- i
C. 2i, - 
+ i, - 
+ i
D. -2i, 
+ i, 
+ i
Determine the order of the matrix.
A. 2 × 4 B. 2 C. 8 D. 4 × 2
Find the center, foci, and vertices of the ellipse.3x2 + 5y2 - 30x + 70y + 305 = 0
A. 
+ 
= 1
center: (5, -7); foci: (6.4, -7), (3.6, -7); vertices: (7.2, -7), (2.8, -7)
B. 
+ 
= 1
center: (-5, 7); foci: (-3.6, 7), (-6.4, 7); vertices: (-7.2, 7), (-2.8, 7)
C. 
+ 
= 1
center: (-5, 7); foci: (-3.6, 7), (-6.4, 7); vertices: (-7.2, 7), (-2.8, 7)
D. 
+ 
= 1
center: (5, -7); foci: (6.4, -7), (3.6, -7); vertices: (7.2, -7), (2.8, -7)