Find k such that the function is a probability density function over the given interval. Then write the probability density function.f(x) = kx; [2, 4]
A. 
; f(x) = 
x
B. 
; f(x) = 
x
C. 
; f(x) = 
x
D. 
; f(x) = 
x
Answer: D
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Provide an appropriate response.Find ? if cos ? = 0.6896 rounded to the nearest tenth of a degree.
A. 0.8° B. 42.6° C. 34.6° D. 46.4°
Make the indicated conversion within metric units of capacity.390 liters to milliliters
A. 390,000 mL B. 3.9 mL C. 39,000 mL D. 0.39 mL
Solve the problem.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs. By using linear regression, the following function is obtained: 
where x is entering GPA and y is current GPA. Use this function to predict current GPA of a student whose entering GPA is 3.3. Entering GPA Current GPA 3.53.63.83.73.63.93.63.63.53.93.93.84.03.73.93.93.53.83.74.0
A. 3.77 B. 3.28 C. 3.57 D. 3.39
Simplify the factorial expression.
A. 
B. 30
C. 2!
D. 6