Exercises

35-42

relate to the function whose graph is sketched in Fig. 12.\ Figure 12\ 35. Find

f(0)

and

f(7)

.\ 36. Find

f(2)

and

f(-1)

.\ 37. Is

f(4)

positive or negative?\ 38. Is

f(6)

positive or negative?\ 39. What is the range of

f

?\ 40. For what values of

x

does

f(x)=0

?\ 41. For what values of

x

is

f(x)

?

Exercises 3542 relate to the function whose graph is sketched in Fig. 12. Figure 12 35. Find f(0) and f(7). 36. Find f(2) and f(1). 37. Is f(4) positive or negative? 38. Is f(6) positive or negative? 39. What is the range of f ? 40. For what values of x does f(x)=0 ? 41. For what values of x is f(x)0