Solve the problem.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 32 questions correct. What was the percent of increase?
A. 7%
B. 72%
C. 28%
D. 21.9%
Answer: C
Mathematics
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Find dy/dt.y = cos3(?t - 17)
A. -3 cos2(?t - 17) sin(?t - 17) B. 3 cos2(?t - 17) C. -3? cos2(?t - 17) sin(?t - 17) D. -3? sin2(?t - 17)
Mathematics
Find the first term and the common difference for the arithmetic sequence. Round approximations to the nearest hundredth.S8 = - 100, a8 = -16
A. a1 = 103, d = -1 B. a1 = 103, d = -4 C. a1 = -9, d = -4 D. a1 = -9, d = -1
Mathematics
Add or subtract. Simplify by collecting like radical terms, if possible.
+ 
A. 3
B. 4
C. 4
D. 3
Mathematics
Find the value of the determinant.
A. -16 B. 16 C. -34 D. 170
Mathematics