Practice exam 1-130

4 b if rev en u e p riceq u a n t i t y su p p o se

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Unformatted text preview: )(q u a n t i t y ). Su p p o se co n s umers w i l l p u rch a se q u n i t s of a pro d u c t at a p rice of 100 +1 q d o l lar s p er u n i t. Wh a t i s t h e min imum n umber of u n i t s t h a t mu s t b e s o l d i n o rd er t h a t sa le s rev en u e b e g reater t h an $ 5 0 0 0 ? 1 7. S u p p o s e co n s umers w i l l p u rch a se q u n i t s of a p ro d u c t w h en t h e p r ice i s (8 0 -q ) / 4 d o l l ar s each . H o w man y u n i t s mu s t b e so l d in o rd er t h at sa le s rev e n u e b e $ 4 0 0 ? P rac t ice te s t 1 an s w er s a) – 3 b ) x < 8 c) 4m rb d ) – 2 /m !2 1 1 A. (a) 4 2 0 (b ) $ 1 8 2. a) 4m rb c) !2 3b b) -2 1 1 B. $ 1 8 0 . m -y d) Brt n 3 +B 3 a) 2 2 0 0 0 + 2 7 0 0x = 4 1 0 0 0 + 1 5 0 0x b) 1 6 y ear s ( 1 5.8 3 y r. ro u n d ed u p ) 4 5. a) -3 b ) -4 d) 2 4 - 4 h 1 2.(a)$ 3 0 7 (b ) $ 2 2 c) 8x + 4 7. (0, -5 / 3 ), (5, 5 /3 ), (-1, -7 / 3 ) 8. a) 1 /2 , -1 b ) -1 9. a) 1 0x = 2 0 0 b ) 2 0 x 8 0 1 4. a) rea l s excep t x=1, x=-1 ( b ) x ! "3 1 5. (a) 3 x + 3h ! 5, 3 x 2 + 2 xh + h 2 + 2 x + 2h, 2 x + h + 2 (a ) x ! 10 (b) 4901 (b ) 1 0. a) C = 1 2 0 0 0 + 1 5x R = 6 5x P = 5 0x - 1 2 0 0 0 b) 2 4 0 c) 2 6 0 1 6. 1 7. q= 4 0...
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This note was uploaded on 08/01/2013 for the course MATH 130 taught by Professor Davidberry during the Fall '08 term at Ohio State.

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