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) = 7e-6x over [0, k]
A. 
ln 
B. - 
ln 
C. 
ln 7
D. e-6x ln 7
Answer: C
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Solve the problem.A 507-seat theater will sell tickets at $20 and $15 for a particular concert. Let x and y represent the number of tickets that will sell for $20 and $15, respectively. Assume that the show will sell out. How many of each ticket must be sold for the revenue to be $8345?
A. 269 tickets at $20 238 tickets at $15 B. 238 tickets at $20 269 tickets at $15 C. 148 tickets at $20 359 tickets at $15 D. 359 tickets at $20 148 tickets at $15
Use a graphing utility to graph the curve defined by the given parametric equations.x = 2t2, y = t + 2; -? < t < ?
A. 
B. 
C. 
D. 
Use spherical coordinates to evaluate  figures 4.png)
where B is the ball x²+y²+z² ? 7.
Select the correct answer. a. 2401 ? b. 343 ? c. 686 ? d. 7 ?
Determine whether the ordered pair given is a solution of the linear inequality in two variables.y > -x + 5; (2, 5)
A. Yes B. No