Find the unit rate.2225 cars in 890 households (reduce to a one household comparison)
A. 2.5 cars/household
B. 1335 cars/household
C. 3115 cars/household
D. 0.4 car/household
Answer: A
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Solve the problem.A man on a dock is pulling in a rope attached to a rowboat at a rate of 4 feet per second. If the man's hands are 3 feet higher than the point where the rope is attached to the boat, how fast is the angle of depression changing when there are still d feet of rope out? Give your answer in radians per second in terms of d.
A. 
rads/sec
B. 
rads/sec
C. 
rads/sec
D. 
rads/sec
Determine the quadratic function whose graph is given.
A. f(x) = x2 - 4x B. f(x) = -x2 - 4x C. f(x) = -x2 + 4x D. f(x) = x2 + 4x
Find the present value. Round to the nearest cent.
A. $44,578.42 B. $20,417.50 C. $20,189.10 D. $9810.90
Provide an appropriate response.Find the standard deviation for the following grouped data:IntervalFrequency9.5-12.5312.5-15.5215.5-18.5718.5-21.54
A. 9.5625 B. 3.256 C. 7.56 D. 3.09