Exam 2 Spring 2012

# 8 seconds b what is the height o f the camera after

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Unformatted text preview: - 16(12 2 ) + 4 000 = 1 696 the height o f the camera after 12 seconds is 1696 ft 16 . (10 Points) Solve the following double inequality: a. - 4 \$ 2 - (3x ' - 4::; 2 - 3x- 3 < 11 + 3) < 11 - 4::; - 3x- 1 < 11 -4 b. ; - 3 \$ - 3x < 12; 1 ;;::: x > -4 <X \$ 1 Graph the solution set. + - - - - - - - - - (-4 1] i f) - 00 c. Write the solution in interval notation. (-4,1] 1 ATH114 S pring 2 012 E XAM I I.. P age 17 Name: - - - - - - - - - - - - - - - - - - - - - - - S e c t i o n : _ __ Instructor: - --------------------------------Please show all work to receive credit. 17. Consider t he f ollowing data, w hich gives the weight (in thousands o f p ounds) x a nd gasoline mileage (miles p er g allon) y for t en d ifferent automobiles. ( 10 Points) 2 .2 44 X y a. F ind the linear regression equation w hich m odels this data. Correct the values o f " a" a nd " b " t o 3 decimal places. y = - 10.618x + 70.106 b. Approximate t he g asoline mileage i f t he weight o f t he a utomobile is 4.9 thousand lbs. ( Round t o t he n earest whole number) y = - 10.618(4.9) + 7 0.106 = 1 8.078 T he gasoline mileage is about 18 m iles per gallon...
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## This note was uploaded on 11/17/2013 for the course MATH 114 taught by Professor Brook during the Fall '08 term at University of Delaware.

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