Find the value of the constant k so that the given function in a probability density function for a random variable over the specified interval. f(x) = 
x over [3, k]
A. 
B. 23
C. 
D. 4
Answer: A
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Use the formula for the general term (the nth term) of an arithmetic sequence to find the indicated term of the sequence with the given first term, a1, and common difference, d.Find a21 when a1 = 5, d = 1.
A. - 15 B. 25 C. - 16 D. 26
Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
A. 
B. 
C. 
D. 
Solve the problem.A lot is in the shape of a right triangle. The shorter leg measures 150 m. The hypotenuse is 50 m longer than the length of the longer leg. How long is the longer leg?
A. 250 m B. 300 m C. 200 m D. 150 m
Use a calculator to find the interest earned if interest is compounded annually. Round to the nearest cent if necessary.$1000 at 4% for 3 years
A. $1124.86 B. $2124.86 C. $0.06 D. $124.86