Solve the problem.A comet follows the hyperbolic path described by 
- 
= 1, where x and y are in millions. If the sun is the focus of the path, how close to the sun is the vertex of the path? 
A. 28 million
B. 3.2 million
C. 2.1 million
D. 5.3 million
Answer: C
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Solve.The square garden in the figure measures x yards on each side. The garden is to be expanded so that one side (the top of the figure) is increased by 3 yards and the adjacent side (the right side of the figure) is increased by 2 yards. Write a polynomial in descending powers of x that expresses the area of the larger garden. Then use the polynomial to determine the area of the larger garden if the original garden measures 5 yards on a side. 
2 yards
A. x2 + 5x + 6; 30 square yards B. x2 + 5; 30 square yards C. x2 + 5; 56 square yards D. x2 + 5x + 6; 56 square yards
Find the y-intercepts for the parabola whose equation is given. If the y-intercepts are irrational, round your answers to the nearest tenth.y = x2 + 4x - 7
A. y-intercept (0, -12) B. No y-intercept C. y-intercept (0, -7) D. y-intercept (0, 7)
Evaluate the expression.(-7)2
A. -14 B. -49 C. 14 D. 49
Perform all operations in correct order.42 + 22
A. 24 B. 36 C. 20 D. 12