Use the substitution method or the elimination method to solve the system. If the system has infinitely many solutions, express the ordered pair in terms of x or y. x + 9y = 95x - 6y = -6
A. (1, 0)
B. (1, 1)
C. (0, 0)
D. (0, 1)
Answer: D
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Find the standard-form equation for a hyperbola which satisfies the given conditions.A hyperbola centered at the origin having vertex at (0, -6) and eccentricity equal to 2
A. 
- 
= 1
B. 
- 
= 1
C. 
+ 
= 1
D. 
- 
= 1
Solve the problem.Find equations of all tangents to the curve f(x) = 
that have slope -1.
A. y = -x - 23, y = -x - 27 B. y = -x + 27 C. y = -x + 27, y = -x - 23 D. y = -x - 23
Use the REGRESSION feature on a graphing calculator.Since 1984 funeral directors have been regulated by the Federal Trade Commission. The average cost of a funeral for an adult in a Midwest city has increased, as shown in the following table. 
Let x represent the number of years since 1980. Use a graphing calculator to fit a quartic function to the data. Round your answer to five decimal places.
A. y = -2.047489x2 + 212.82699x + 1879.85469 B. y = -0.04268x4 + 1.53645x3 - 16.76289x2 + 231.82723x + 1927.58518 C. y = 170.5971x + 1991.5213 D. y = -0.04268x4
Solve the system of equations by the substitution method.
A. {(-2, -4)} B. {(-4, 2)} C. {(-3, -2)} D. {(-4, -2)}