?A study of the effectiveness of a flu vaccine was conducted with a sample of 464 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.
?
No vaccineOne injectionTwo injectionsTotalFlu851225No flu13541263439Total14346275464A person is selected at random from the sample. Find the probability that the person had two injections. Round your anser to one decimal place.
A. ?275.0%
B. ?63.3%
C. ?71.3%
D. ?67.3%
E. ?59.3%
Answer: E
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Decide whether the graph of the equation opens up, down, to the left, or to the right; and whether it is wider, narrower, or the same shape as the graph of 
(or 
).f(x) = 
x2 - 8x - 8
A. Down; narrower B. Up; narrower C. Up; wider D. Down; wider
Find the distance between the pair of points. Give an exact answer, and where appropriate, an approximation to three decimal places.(0, 0) and (a, b)
A. 
B. a2 + b2
C. 
D. a + b
Find all solutions if 
. Round each of the solutions to the nearest tenth.
?
?
A. 121.6°, 151.7°, 300.4°, 329.6° B. 120.4°, 149.6°, 304.1°, 323.8° C. 121.6°, 149.6°, 300.4°, 323.8° D. 120.4°, 149.6°, 300.4°, 329.6° E. 120.4°, 151.7°, 304.1°, 329.6°
Multiply.(p + 7q)(p - 7q)
A. p2 - 14q2 B. p2 + 14pq - 49q2 C. p2 - 14pq - 49q2 D. p2 - 49q2