Find the domain of the given function f and find where it is increasing and decreasing, and also where it is concave upward and where it is concave downward. Identify all extreme values and points of inflection. Then sketch the graph of y = f(x). f(x) = log7(x2 + 7)
What will be an ideal response?
Domain = (-?, ?)
Increasing on (0, ?) and decreasing on (-?, 0)
Minimum at (0, 1)
Concave down on (-?, -
) ? (
, ?) and concave up on (-
, 
)
Points of inflection at 
and 
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Evaluate the expression by hand.2565/4
A. 65,536 B. 16,384 C. 1024 D. 262,144
Solve the problem.A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 264 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?
A. 8712 ft2 B. 4356 ft2 C. 17,424 ft2 D. 13,068 ft2
Find the value of the strategy.Let M be the matrix game having payoff matrix 
.Find ?(y) when y = 
.
A. 
B. - 1
C. 
D. - 
Solve the problem.An insurance company says that at age 50 one must choose to take 
at age 60, $30,000 at 70, or 
at 80 ($0 death benefit). The probability of living from 50 to 60 is 0.85, from 50 to 70, 
, and from 50 to 80, 0.46. Find the expected value at each age.
A. 60 - $8500 70 - $13,800 80 - $23,000 B. 60 - $8500 70 - $18,300 80 - $23,000 C. 60 - $6100 70 - $18,300 80 - $23,000 D. 60 - $8500 70 - $25,500 80 - $42,500