Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000
B. $360,000
C. $60,000
D. $218,400
Answer: D
Mathematics
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The function gives the distances (in feet) traveled in time t (in seconds) by a particle. Find the velocity and acceleration at the given time.s = 
, t = 3
A. v = 
ft/s, a = - 
ft/s2
B. v = 
ft/s, a = - 
ft/s2
C. v = - 
ft/s, a = 
ft/s2
D. v = - 
ft/s, a = 
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Mathematics
The graph of an ellipse is given. Find the standard form of the equation of the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
- 
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Mathematics
Find the slope and y-intercept of the line.x + y = -9
A. slope = 1; y-intercept = -9 B. slope = 0; y-intercept = -9 C. slope = -1; y-intercept = -9 D. slope = -1; y-intercept = 9
Mathematics