Provide an appropriate response.Write an equation of the tangent line to the graph of y = (-4x2 - 5x + 2)(2x + 5) at the point where x = 0.
A. y = -21x - 10
B. y = - 
x - 10
C. y = - 
x + 10
D. y = -21x + 10
Answer: D
Mathematics
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For a trapezoid, the lengths of the two bases are a and b. What expression represents the length of the median of the trapezoid?
What will be an ideal response?
Mathematics
Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.
A. 
B. 
C. 
D. 
Mathematics
Add or subtract. Then simplify. If a denominator has two or more factors (other than monomials), leave it in factored form. Express the answer using the denominator of the first fraction when applicable.
+ 
A. 
B. 
C. 1
D. 
Mathematics
Simplify the expression.
A. - 
B. - 
C. 
D. - 
Mathematics