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The cost for developing and printing a roll of film

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Unformatted text preview: irst b ounces and d cents for each additional ounce. Find the cost, in cents, for mailing a package weighing f ounces if f is more than b. (A) (c + d) (f – b) (B) c + d (f – b) (C) c + bd (D) c + (d – b) (E) b + (f – b) Josh’s allowance is m cents per week. Represent the number of dollars he gets in a year. (A) (B) (C) (D) (E) 3m 25 7. 3y + f + 12i 5200m 1200m 13m 25 25m 13 www.petersons.com 138 Chapter 9 8. If it takes T tablespoons of coffee to make c cups, how many tablespoons of coffee are needed to make d cups? (A) (B) (C) (D) (E) Tc d T dc Td c d Tc cd T 10. The cost for developing and printing a roll of film is c cents for processing the roll and d cents for each print. How much will it cost, in cents, to develop and print a roll of film with 20 exposures? (A) 20c + d (B) 20(c + d) (C) c + 20d (D) (E) c+ d 20 c+d 20 9. The charge for renting a rowboat on Loon Lake is D dollars per hour plus c cents for each minute into the next hour. How many dollars will Mr. Wilson pay if he used a boat from 3:40 P.M. to 6:20 P.M.? (A) D + 40c (B) 2D + 40c (C) 2D + 4c (D) 2D + .4c (E) D + .4c www.petersons.com Literal Expressions 139 SOLUTIONS TO PRACTICE EXERCISES Diagnostic Test 1. (D) This can be solved by a proportion, comparing books to dollars. 1m = cx x = mc 6. (A) r rows with s seats each have a total of rs seats. s rows with r seats each have a total of sr seats. Therefore, the school auditorium has a total of rs + sr or 2rs seats. (C) In n nickels, there are 5n cents. In q quarters, there are 25q cents. Altogether we have 5n + 25q cents. To see how many dimes this is, divide by 10. 5n + 25q n + 5q 1 5 = = n+ q 10 2 2 2 2. (C) The cost in cents of k pounds at c cents per pound is kc. To convert this to dollars, we divide by 100. (A) This can be solved by a proportion, comparing pencils to cents. p1 = cx c x= p 7. 3. 8. 4. (C) This can be solved by a proportion, comparing miles to hours. rx = h1 r =x h (D) The daily charge for 5 days at D dollars per day is 5D dol...
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