Solve the problem.The formula 
can be used to estimate the speed of a car, v, in miles per hour, based on the length, L, in feet, of its skid marks upon sudden braking on a dry asphalt road. If a car is involved in an accident and its skid marks measure 361.25 feet, at what estimated speed was the car traveling when it applied its brakes just prior to the accident?
A. 95 miles per hour
B. 80 miles per hour
C. 90 miles per hour
D. 85 miles per hour
Answer: D
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Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.sin3 x
A. 
sin x + 
sin 2x - 
sin 3x
B. 
sin x
C. 
sin x - 
sin 3x
D. 
sin x + 
sin 2x
Simplify the expression. If any variables exist, assume that they are positive.-15
+ 17
A. 2
B. 33
C. -3
D. -32
Simplify. Write your answers in the form of a+bi, where a and b are real numbers.
A. 
- 
i
B. 
+ 
i
C. 
+ 
i
D. 
+ 
i
A dart is thrown randomly and sticks on the circular dart board shown. Find the requested probability. Assume that all sectors are the same size and that the dart does not land on a border between shaded areas. 
Find the probability that the dart lands on a number greater than 9.
A. 0
B. 
C. 
D. 1