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Raul Enrique Mora Gonzalez
WeBWorK assignment number Tarea1 is due : 08/28/2012 at 11:55pm CDT. The (* replace with url for the course home page *) for the course contains the syllabus, grading policy and other information.

20131-Calculo Dif Int Gilda 1IM1

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1. (1 pt) The demand equation for a certain product is given by p = 136 − 0.045x , where p is the unit price (in dollars) of the product and x is the number of units produced. The total revenue obtained by producing and selling x units is given by R = xp. Determine prices p that would yield a revenue of 6770 dollars. Lowest such price = Highest such price = 2. (1 pt) Anequation of a line through (-6, 8) which is parallel to the line y = −2x + 2 has slope: and y-intercept at: 3. (1 pt)

x2 − 4x

15x2 − 10x.

−6x2 + 36x + 960 13x2 + 78x − 1183

7. (1 pt) Given the function f (x) = 8x + 0 8x + 0 if x < 0 if x ≥ 0

Calculate the following values: f (−1) = f (0) = f (2) = 1. 8. (1 pt) The domain of the function 1 √ 15x + 7 is Write the answer in intervalnotation. Note: If the answer includes more than one interval write the intervals separated by the union symbol, U. If needed enter −∞ as - inﬁnity and ∞ as inﬁnity . 9. (1 pt) Find the domain of the function (x + 18)(x − 15) 2.

Domain: Write the answer in interval notation. Note: If the answer includes more than one interval write the intervals separated by the union symbol, U. If needed enter −∞ as- inﬁnity and ∞ as inﬁnity . 10. (1 pt) Enter Yes or No in each answer space below to indicate whether the corresponding equation deﬁnes y as a function of x. Note: Be careful, You only have TWO chances to get them right. 1. 2. 3. 4. x2 + 5y = 10 2|x| + y = 1 x + 3 = y2 3x = y2

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11. (1 pt) Enter Yes or No in each answer space below to indicate whether the corresponding curve deﬁnes y as afunction of x.
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vertex at (3, 2) and passes the point (0, −7). Find the quadratic function. f (x) = 14. (1 pt) The functions f (x) and g(x) are given in the graph.

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Find the corresponding function values. If there is no function value, type DNE in the answer blank. 6. ( f + g)(2) = 12. (1 pt) Consider the Quadratic function f (x) = x2 − 3x − 40. Its vertex is ( , ). Its...