Provide an appropriate response.The random variable X has density function f(x) = 
Find (a) P(20 ? X ? 40) and (b) P(X ? 40).
Fill in the blank(s) with the appropriate word(s).
(a) (1/4) (b) (1/4)
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Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. x-intercept: (0, 0) , y-intercept: (0, 0) ;
B. x-intercept: (0, 0) , y-intercept: (0, 0) ;
C. x-intercept: (0, 0) , y-intercept: (0, 0) ;
D. x-intercept: (0, 0) , y-intercept: (0, 0) ;
Construct a truth table for the statement.r ? ~(c ? q)
A. 
| T | T | T | T |
T F T T
T F F T
F T T F
F T F T
F F T T
F F F T
B.
| T | T | T | T |
T F T T
T F F T
F T T F
F T F T
F F T T
F F F F
Solve the system by graphing.
?
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What will be an ideal response?
Solve the inequality.In order for a chemical reaction to remain stable, its Celsius temperature must be no more than 
. Find the Farenheit temperatures at which the reaction will remain stable. 
A. F ? 49.72° B. F ? 250.7° C. F ? 49.72° D. F ? 250.7°