Solve the problem using the quadratic formula.For a car traveling at x mph, stopping distance is estimated by the formula d(x) = 
x2 + 
x. Find a (maximum) safe speed for a stopping distance of 630 ft. Round your answer to the nearest mph.
A. 65 mph
B. 70 mph
C. 73 mph
D. 61 mph
Answer: D
Mathematics
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Evaluate the integral.
A. 2
+ C
B. 2
+ 3 ln 
+ C
C. 2
- 3 ln 
+ C
D. 2
+ 3 tan-1 
+ C
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A company rents a mid-size car at $318 per month for eight months. What is the cost for the car rental during this time?
A. $2,493 B. $2,576 C. $2,544 D. $326
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Add the polynomials.(8x7 - 7x5 - 8) + (6x7 + 5x5 - 9)
A. -5x12 B. 14x7 - 2x5 - 17 C. -2x7 + 13x5 - 16 D. 14 - 2x7 - 17x5
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Write the complex number in the form a + bi.8 + 
A. 6 B. 8 + 2i C. 8 + i D. 8 - 2i
Mathematics