I can now see the image. Let's proceed to solve each problem. I'll break it down:

21. If $f(x) = 2x + 3$, what is $f(4)$?

$f(4) = 2(4) + 3 = 8 + 3 = 11 \quad \text{Answer: C. 11}$

22. Given $f(x) = x^2 - 5x + 6$, what is $f(2)$?

$f(2) = (2)^2 - 5(2) + 6 = 4 - 10 + 6 = 0 \quad \text{Answer: A. 0}$

23. If $f(x) = 3x - 7$, find $f(-1)$.

$f(-1) = 3(-1) - 7 = -3 - 7 = -10 \quad \text{Answer: C. -10}$

24. Given $f(x) = \frac{1}{x+1}$, what is $f(0)$?

$f(0) = \frac{1}{0+1} = 1 \quad \text{Answer: A. 1}$

25. If $g(x) = 4x - 9$, what is $g(3)$?

$g(3) = 4(3) - 9 = 12 - 9 = 3 \quad \text{Answer: C. 3}$

26. If $f(x) = x^2 + 2x - 3$, what is $f(-2)$?

$f(-2) = (-2)^2 + 2(-2) - 3 = 4 - 4 - 3 = -3 \quad \text{Answer: C. -3}$

27. Given $f(x) = 5x^2 - 3x + 7$, what is $f(1)$?

$f(1) = 5(1)^2 - 3(1) + 7 = 5 - 3 + 7 = 9 \quad \text{Answer: A. 9}$

28. If $h(x) = x^3 - x$, find $h(2)$.

$h(2) = 2^3 - 2 = 8 - 2 = 6 \quad \text{Answer: B. 6}$

29. Given $f(x) = 7x - 5$, what is $f(-2)$?

$f(-2) = 7(-2) - 5 = -14 - 5 = -19 \quad \text{Answer: A. -19}$

30. If $f(x) = \frac{2}{x} - 3$, find $f(5)$.

f(5) = \frac{2}{5} - 3 = \frac{2}{5} - \frac{15}{5} = \frac{-13}{5} \quad \text{Answer: C. \frac{2}{3}}

31. What is the result of $5 + (-3)5 + (-3)5 + (-3)$?

$5 + (-15) + (-15) + (-3) = 5 - 15 - 15 - 3 = -28 \quad \text{Answer: A. -28}$

32. Solve $-6 + (-4) - 6 + (-4) - 6 + (-4)$.

$-6 + (-4) + (-6) + (-4) = -10 - 6 - 4 = -30 \quad \text{Answer: A. -30}$

33. What is $7(-2)7 - (-2)7$?

$7(-14) - (-14) = -98 + 14 = -84 \quad \text{Answer: A. -84 (seems typo in options)}$

34. Solve $-5 - 3 - 5 - 3 - 5 - 3$.

$-5 - 3 - 5 - 3 - 5 - 3 = -24 \quad \text{Answer: A. -24}$

35. What is the product of $-4 \times 6 - 4 \times 6 - 4 \times 6$?

$-4(6) - 4(6) - 4(6) = -24 - 24 - 24 = -72 \quad \text{Answer: B. -72}$

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Do you have any questions or need further details on any of these?

Relative Questions:

1. How does the slope in linear equations like $f(x) = 2x + 3$ affect the output values?
2. What happens to the graph of a quadratic function when the coefficients change?
3. How can you identify the vertex of a quadratic function without graphing it?
4. Why is $f(0)$ undefined in certain rational functions like $\frac{1}{x+1}$?
5. How do you simplify expressions involving products and sums of negative numbers?

Tip: When working with quadratic equations, always check if the equation can be factored to simplify solving it.