Cracking The SAT Premium

B) 1

C) 2

D) 3

29 .The function g is defined by g(x) = 2x^2 – dx – 6, where d is a constant. If one of the zeros
of g is 6, what is the value of the other zero of g ?
A) 2

B)

C) –

D) –2

30 .The flu shot for a flu season is created from four strains of the flu virus, named Strain A,
B, C, and D, respectively. Medical researchers use the following data to determine the
effectiveness of the vaccine over the flu season. Table 1 shows the effectiveness of the
vaccine against each of these strains individually. The graph below the table shows the
prevalence of each of these strains during each month of the flu season, represented as a
percentage of the overall cases of flu that month.

Table   1

StrainEffectiveness

A 35%

B 13%

C 76%

D 68%

For the strain  against which   the flu shot    was the most    effective,  approximately   how

effective   was the shot    overall during  the month   that    strain  was least   prevalent?