19. Suppose the total cost in dollars to produce x widgets is given by the function C(x)=0.0002x^3+0.09x^2+12x+1500 A. Find the average rate of change of the total cost when the number of widgets produced increases from 100 to 300 items. B. Find the average rate of change of the total cost when the number of widgets produced increases from 200 to 500 items.

Show algebraically that f and g are inverse functions. (Example 3) 30 $f(x)=\frac {x^{2}}{4}+8,x\geqslant 0$ $g(x)=\sqrt {4x-32}$

Find the higher-order derivative. See Examples 1 and 3. $f^{(4)}(x)=(x^{2}+6)^{2}$ $f^{(6)}(x)=\square $

Determine the equation of the slant asymptote for the equation $f(x)=\frac {x^{2}+3}{x-1}$ Give your answer in the form ' $y=mx+b'$ Provide your answer below: $y=\square $

Find the inverse of $f(x)=\frac {-3x+3}{-4x+2}$ $f^{-1}(x)=\square $

16 The sum of a rational and irrational number is a(n) $\square $ number.

Is the first number is divisible by the second number? $736,652;9$ No Yes

Several equations are given illustrating a suspected number pattern. Determine what the next equation would be,and verify that it is indeed a true statement. $2^{2}-1^{2}=2+1$ $3^{2}-2^{2}=3+2$ $4^{2}-3^{2}=4+3$ Select the correct choice below and fill in the answer box to complete your choice. (Type an equation, Do not simplify.) A. The next equation would be $\square $ , but it is a false statement. B. The next equation would be $\square $ , and it is a true statement.

(1) Factor out the greatest common factor. If the greatest common factor is 1, just retype the polynomial. $32k^{4}+22k^{3}-9k-33$ $\square $

If $f(x,y)=sin(x)+sin(y)$ then $-\sqrt {2}\leqslant D_{u}f\leqslant \sqrt {2}$ True False

\[ \begin{array}{c} 7 / 10 \\ -14+(-3) \end{array} \] Type your answer.