Translate the English sentence into a mathematical sentence and solve, if necessary. Use x as the variable.Twenty is greater than or equal to twice the difference of a number and six.
A. 20 ? 2(x - 6), x ? 16
B. 20 ? 2(x - 6), x ? 16
C. 20 ? 2(x - 6), x ? 24
D. 20 ? 2(x - 6), x ? 4
Answer: B
Mathematics
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Find the common ratio for the geometric sequence.3, 
, 
, 
, . . .
A. 
B. 
C. 
D. 
Mathematics
Find f-1(x) for the following one-to-one function f.f = {(-3, -3), (-2, -2), (-1, -1), (0, 0)}
A. f-1 = {(-3, -3), (-2, -2), (-1, -1), (0, 0)} B. f-1 = {(-3, 3), (-2, 2), (-1, 1), (0, 0)} C. f-1 = {(3, 3), (2, 2), (1, 1), (0, 0)} D. f-1 = {(3, -3), (2, -2), (1, -1), (0, 0)}
Mathematics
Find percent notation.
Round to the nearest tenth, if necessary.
A. 130% B. 41.4% C. 5.4% D. 53.8%
Mathematics
Solve the system by the addition method.
A. {(2
, 
), (-2
, 
), (2
, -
), (-2
, -
)}
B. {(2
, 
), (-2
, -
)}
C. {(0, 0)}
D. {(2
, 
), (-2
, 
)}
Mathematics