Find the standard-form equation of the hyperbola centered at the origin which satisfies the given conditions.Foci at (-15, 0), (15, 0); asymptotes: y = 
x, y = - 
x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: B
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Solve the problem.If a ball is thrown upward with a velocity of 18 feet per second, its height h in feet above the ground after t seconds can be approximated using the formula 
Find the height of the ball after 0.5 seconds.
A. 18 ft B. 81 ft C. 9 ft D. 4 ft
Solve the problem.The weekly sales in thousands of items of a product has a seasonal sales record approximated by 
in weeks with 
referring to the first week in the year). During which 
will the sales equal 82,280 items?
A. week 4 and week 47 B. week 30 and week 47 C. week 21 and week 30 D. week 4, week 20, and week 52
Write the statement as a proportion. ? 99 people is to 90 chairs as 11 people is to 10 chairs ?
A. 
B. 
C. 
D. 
E. 
Find a quadratic equation with integer coefficients that has the given solution set.{0, 2}
A. x2 - 4 = 0 B. x2 + 2x + 4 = 0 C. x2 - 2x = 0 D. x2 + 2x = 0