Solve the problem. Round to the nearest tenth of a percent, if necessary.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 30 questions correct. What was the percent of increase?
A. 5%
B. 80%
C. 16.7%
D. 20%
Answer: D
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Graph the parabola and its vertex, focus, and directrix.x2 = 8y
A. 
B. 
C. 
D. 
Factor the polynomial completely.1000s3 + 1
A. (10s - 1)(100s2 + 10s + 1) B. (10s + 1)(100s2 - 10s + 1) C. (10s + 1)(100s2 + 1) D. (1000s + 1)(s2 - 10s + 1)
Find the area of the triangle or rectangle. Round to the nearest thousandth, if necessary.
ft
A. 0.355 sq. ft B. 0.028 sq. ft C. 0.029 sq. ft D. 0.71 sq. ft
Solve using elimination.
A. x = 2, y = -3; x = -2, y = 3 or (2, -3), (-2, 3) B. x= 1, y = 3; x = 1, y = -3; x = -1, y = 3; x = -1, y = -3 or (1, 3), (1, -3), (-2, 3), (-2, -3) C. x = 1, y = 3; x = -1, y= -3 or (1, 3), (-1, -3) D. x = 2, y = 3; x = 2, y = -3; x = -2, y = 3; x = -2, y = -3 or (2, 3), (2, -3), (-2, 3), (-2, -3)