Factor. Check by multiplying.7x - 21y
A. 7(x - 21y)
B. 7(x - y)
C. 7(x - 3y)
D. 3(7x - 7y)
Answer: C
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Which of the following is a definition of a reflection transformation? ?
A. ?The shape flips about a horizontal, vertical, or diagonal line. B. ?The shape undergoes dilation as it moves horizontally. C. ?The shape rotates 90? about a line or a point. D. ?The shape moves diagonally along a line. E. ?The shape stays in one location and dilates.
Compare the fractions.
, 
, 
, 
A. 
< 
< 
< 
B. 
< 
< 
< 
C. 
< 
< 
< 
D. 
< 
< 
< 
Find the first term and the common ratio for the geometric sequence. Round approximations to the nearest hundredth.a2 = -2048, a6 = -8
A. a1 = -32,768, r = 0.25 B. a1 = -32, r = 4 C. a1 = -8192, r = 0.25 D. a1 = -8, r = 4
For problems 1 and 2, set 
is the set of real numbers greater than 5 and set 
is the set of real numbers less than 11. Represent the union 
using interval notation.
A. 
B. 
C. 
D. 
E. none of these