Find the expected value of the probability density function to the nearest hundredth.f(x) = 
; [2, 8]
A. 4.50
B. 5.00
C. 5.33
D. 6.50
Answer: B
Mathematics
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Find the slope of the curve for the given value of x.y = x2 + 11x - 15, x = 1
A. slope is - 
B. slope is 13
C. slope is -39
D. slope is 
Mathematics
Simplify the expression.(1 - 
)(6
+ 2)
A. 6
+ 2 - 30
- 2
B. 6
+ 2 - 6
- 2
C. 6
- 2 - 6
- 
D. 6
+ 2 - 
+ 2
Mathematics
Solve the equation.
= 2
A. {1} B. {7} C. {8} D. {3}
Mathematics
A formula is given along with the values of all but one of the variables in the formula. Find the value of the variable not given.V = 
?r3; r = 4, ? = 3.14
A. 66.99 B. 803.85 C. 267.95 D. 85.33
Mathematics