Solve the equation.
= 
A. 
B. 
C. 
D. 
Answer: C
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Graph the equation and its tangent.Graph y = 4x2 and the tangent to the curve at the point whose x-coordinate is -2.
A. 
B. 
C. 
D. 
Solve the problem.The low temperature in city S yesterday was 32 degrees. For this month of the year, the average low temperature in city S is 
with a standard deviation of 7.8 degrees. The low temperature in city W yesterday was 48 degrees. For this month of the year, the average low temperature in city W is 38 with a standard deviation of 6.6 degrees. Find the z-score for each city. Relatively speaking, which city had the more unusual low temperature?
A. 1.0, 10.0, city S B. 0.13, 1.52, city W C. 0.13, 1.52, city S D. 1.0, 10.0, city W
Solve the problem.In a certain fraction, the numerator is 3 less than the denominator. If 2 is added to both the numerator and the denominator, the resulting fraction is equal to 
. What was the original fraction (not necessarily written in lowest terms)?.
A. 
B. 
C. 
D. 
Use the quadratic formula to solve the equation.0.5x2 + 0.3x + 0.4 = 0
A. {
, 
}
B. {
, 
}
C. {
, 
}
D. {
, 
}