Solve the problem.The driver of a car swerved hard to avoid hitting a deer and the car left a skid mark 40 feet long. Based on research data, the speed of the car (in miles per hour) can be estimated by 
where L is the length of the skid mark. How fast was the car travelling when the driver swerved? Round to the nearest mile per hour.
A. 57 mph
B. 28 mph
C. 126 mph
D. 358 mph
Answer: A
Mathematics
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Find the domain and range for the indicated function.f(x) = 
,
g(x) = 
;
f ? g
A. D: x ? 3 R: y > 0 B. D: x > 3 R: y ? 0 C. D: x ? 3 R: -? < y < ? D. D: x ? 3 R: y ? 0
Mathematics
Use a graphing utility to graph the curve defined by the given parametric equations.x = 3 cos t, y = 2 sin t; 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Determine if the given vectors are orthogonal, parallel, or neither.v = 2i - j, w = 4i - 2j
A. Neither B. Orthogonal C. Parallel
Mathematics
Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Mathematics