Practice exam 1-130

# D s k etc h t h e g rap h of th e p rofi t f u n c t

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Unformatted text preview: rap h of th e P rofi t F u n c t i o n. (h i n t : see p ag e 5 9 i n tex t) 1 1. (A ) S u p p o se t h e w eek l y d eman d fu n ct i o n for larg e p izza s a t t h e l o ca l p izza p lace i s p = 26 ! q 40 (a) if th e cu rren t p r ice i s \$ 1 5 .5 0 , h o w man y p izza s are s o l d ? (b ) If 3 2 0 p i zza s are s o l d, W h a t i s t h e cu rren t p r ice ? (B) If th e w eek l y s u p p l y fu n ct i o n for th e h o u s e b ran d at y o u r mark et i s p= of p o u n d s s u p p l ie d , h o w man y p o u n d s w i l l b e s u p p l i ed if th e p r ice i s \$ 6 p er p o u n d. q 30 Wh ere q i s t h e n umb er 1 2. (a) A reta i ler w a n t s a 3 0 % mark u p o n t h e se l l i n g p r ice of an i t em th a t co s t s h im \$ 2 1 4 .9 0 . Wh a t se l l i n g p r ice s h o u l d h e ch arg e ? 1 2. (b ) A to a s ter co s t s t h e A ce D e p artmen t s t o re \$ 2 0 . If th e s t o re w an t s a p rofit of 1 0 % o n i t s co s t, w h a t s h o u l d t h e se l l i n g p r ice b e ? 1 3. Th e to ta l p r ice of a n ew car ( i n c l u d i n g 6 % sa le s tax )i s \$ 1 0,0 3 3. H o w much of th i s i s tax ? 1 4. W h a t i s t h e d omain of 1 5. F i n d f ( x + h) an d 3x y= 2 an d b) y = x + 3 x !1 f ( x + h) ! f ( x ) 2 for (a) f(x)=3x-5 , (b) f ( x ) = x + 2 x h a) 1 6. (a)S o l v e for x: 2(8 ! x ) " !4 (b ) If rev en u e = (p rice...
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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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