Exam 1: Functions, Graphs, and Limits

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Sketch the graph of the given function. f(x)=x2+2f ( x ) = x ^ { 2 } + 2 (Tick marks are spaced one unit apart.)

(Multiple Choice)
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Write an equation for the line with the given properties. Through (3, -1) with slope 2

(Short Answer)
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Compute the indicated value of the given function. f(t)={−3t+5 if t<−1t2+6 if t≥−1f ( t ) = \left\{ \begin{aligned}- 3 t + 5 & \text { if } t < - 1 \\t ^ { 2 } + 6 & \text { if } t \geq - 1\end{aligned} \right. ; f (-3)

(Multiple Choice)
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Find the indicated one-sided limit. If the limiting value is infinite, indicate whether it is + ∞\infty or - ∞\infty . lim⁡x→36−x−6x−36\lim _ { x \rightarrow 36 ^ { - } } \frac { \sqrt { x } - 6 } { x - 36 }

(Short Answer)
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Find the indicated limit if it exists. lim⁡x→1(2x2−3x+1)\lim _ { x \rightarrow 1 } \left( 2 x ^ { 2 } - 3 x + 1 \right)

(Short Answer)
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Compute the indicated value of the given function. f(x)={x2−1 if x<13 if x=12−5x if x>1f ( x ) = \left\{ \begin{aligned}x ^ { 2 } - 1 & \text { if } x < 1 \\3 & \text { if } x = 1 \\2 - 5 x & \text { if } x > 1\end{aligned} \right. ; f (2)

(Short Answer)
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A manufacturer's total cost consists of a fixed overhead of $350 plus production costs of $60 per unit. Express the total cost in dollars as a function of the number of units produced.

(Short Answer)
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Compute the indicated value of the given function. f (x) = | x + 2 | + 3| x - 1 |; f (-3)

(Multiple Choice)
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An appliance manufacturer can sell refrigerators for $600 apiece. The manufacturer's total cost consists of a fixed overhead of $12,000 plus production cost of $400 per refrigerator. How many refrigerators must be sold for the manufacturer to break even?

(Short Answer)
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Determine the domain of the given function. f(x)=x4+5x3+4x+1f ( x ) = x ^ { 4 } + 5 x ^ { 3 } + 4 x + 1

(Short Answer)
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List all the values of x for which the given function is not continuous. f(x)={x2 if x≤24 if x>2f ( x ) = \left\{ \begin{aligned}x ^ { 2 } & \text { if } x \leq 2 \\4 & \text { if } x > 2\end{aligned} \right.

(Short Answer)
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Each unit of a certain commodity costs p = 11x + 12 cents when x units of the commodity are produced. If all units are sold at this price, express the revenue derived from the sales as a function of x.

(Multiple Choice)
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lim⁡x→3−f(x)=3\lim _ { x \rightarrow 3 ^ {- } } f ( x ) = 3 where f(x)={x if x<3x+1 if x≥3f ( x ) = \left\{ \begin{aligned}x & \text { if } x < 3 \\x + 1 & \text { if } x \geq 3\end{aligned} \right.

(True/False)
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Find the indicated limit if it exists. lim⁡x→1x2+3x+2x2−1\lim _ { x \rightarrow 1 } \frac { x ^ { 2 } + 3 x + 2 } { x ^ { 2 } - 1 }

(Multiple Choice)
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