Solve the equation in the real number system.2x4 - 19x3 + 74x2 - 127x + 78 = 0
A. 
B. 
C. 
D. 
Answer: A
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Let 
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Use a Riemann sum with four subintervals of equal length 
to approximate the area of R (under the graph of f on the interval [0, 2]). Choose the representative points to be the left end points of the subintervals.
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__________ sq units
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Repeat previous part with eight subintervals of equal length 
.
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__________ sq units
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Compare the approximations obtained in previous parts with the exact area (12 sq units). Do the approximations improve with larger n?
What will be an ideal response?
Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given angle. Give exact answers with rational denominators.Find tan A when a = 6 and b = 7.
A. 
B. 
C. 
D. 
Simplify and complete the expression.5(y - 7) + 8y = 5y + - 35 = - 35
What will be an ideal response?
Decide whether the problem is an equation or an expression.9(3x + 7) - 7(6x - 4)
A. Expression B. Equation