The equation has a solution r in the interval indicated. Approximate this solution correct to two decimal places.x4 - x3 - 7x2 + 5x + 10 = 0; -3 ? r ? -2
Fill in the blank(s) with the appropriate word(s).
-2.24
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Find the center-radius form of the circle described or graphed.a circle having a diameter with endpoints (4, -6) and (-6, -5)
A. 
2 + 
2 = 101
B. 
2 + 
2 = 125
C. 
2 + 
2 = 
D. 
2 + 
2 = 5
Solve the equation by factoring.3x2 = 5x + 8
A. 
B. 
C. 
D. 
Solve the problem.A pharmaceutical company claims that the concentration of a drug in a patient's bloodstream will be at least 25% for 8 hours. Suppose that clinical tests show that the concentration of the drug (as a percent) t hours after injection is given by 
During what time period is the concentration at least 25%?
A. 1 hours ? t ? 5 hours B. 0 hours ? t ? 8 hours C. 1 hours ? t ? 9 hours D. 2 hours ? t ? 10 hours
Find the real solutions, if any, of the equation. Use the quadratic formula.4x = 1 + 
A. {- 
, 
}
B. {
, 
}
C. {
}
D. no real solution