Use factoring to find the zeros of the quadratic function. List the x-intercepts of the graph of the function.g(x) = 121x2 - 1
A. x = - 
B. x = 
C. x = 
, x = 0
D. x = 
, x = - 
Answer: D
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A study of the effectiveness of a flu vaccine was conducted with a sample of 469 people. Some participants in the study were given no vaccine, some were given one injection, and some were given two injections. The results of the study are listed in the table.
A person is selected at random from the sample. Find the specified probability that the person got the flu and had one injection. Round your answer to one decimal place.
Multiply. Simplify, if possible.2
? 
A. 6
B. 1
C. 2
D. 
Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place.The radiator in a certain make of car needs to contain 
of 40% antifreeze. The radiator now contains 
of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
A. 25 L B. 20 L C. 12.5 L D. 16.7 L
Solve the system of equations by substitution.
A. x = 5, y = 2; (5, 2) B. x = -5, y = -2; ( -5, -2) C. x = -5, y = 2; (-5, 2) D. x = 5, y = -2; (5, -2)