Solve the problem.The distance D, in feet, it takes a car travelling at x mph to come to a full stop after hitting the brakes is given by 
What is the stopping distance for a car travelling at 50 mph?
A. 3200 ft
B. 189 ft
C. 126 ft
D. 3152.9 ft
Answer: D
Mathematics
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Solve the quadratic equation by completing the square.x2 + 8x - 7 = 0
A. x = -1 ± 
B. x = -4 ± 
C. x = 4 + 
D. x = -4 ± 2
Mathematics
Simplify the radical expression. Assume all variables represent nonnegative real numbers.
A. 405x
B. 9x
C. 9
D. 9x
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
- 
A. 
B. 3x
C. 
D. 0
Mathematics
For the given graph, write the inequality in set-builder notation and interval notation.
A. {x|x ? -3 or x < 1}, [-3, 1) B. {x|x > -3 or x ? 1}, (-3, 1] C. {x|-3 ? x < 1}, [-3, 1) D. {x|-3 < x ? 1}, (-3, 1]
Mathematics