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Petersonscom literal expressions 141 6 b the cost for

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Unformatted text preview: ts. In d dimes, there are 10d cents. Altogether, we have 5n + 10d cents. To see how many quarters this gives, divide by 25. 5n + 10 d n + 2d = , since a fraction can be 25 5 simplified when every term is divided by the same factor, in this case 5. 5. (B) Commission is paid on (r – 500) dollars. His commission is .05(r – 500) or .05r – 25. When this is added to his base salary of 100, we have 100 + .05r – 25, or 75 + .05r. 5. (E) This can be solved by a proportion, comparing roses to dollars. Since d dozen roses equals 12d roses, 12d 1 = r x 12d ⋅ x = r r x= 12d www.petersons.com Literal Expressions 141 6. (B) The cost for the first b ounces is c cents. The number of additional ounces is (f – b), and the cost at d cents for each additional ounce is (f – b)d. Therefore, the total cost is c + d(f – b). (D) Since there are 52 weeks in a year, his allowance in cents is 52m. To change to dollars, 52m 13m we divide by 100 and get 100 or 25 . (C) This can be solved by a proportion comparing tablespoons to cups. Tx = cd cx = Td Td x= c 7. 8. 9. (D) The amount of time from 3:40 P.M. to 6:20 P.M. is 2 hrs. 40 min. Therefore, the charge at D dollars per hour and c cents per minute into the next hour is 2D dollars + 40c cents or 2D + .4c dollars. 10. (C) The cost for processing the roll is c cents. The cost for printing 20 exposures at d cents per print is 20d cents. Therefore, the total cost is c + 20d. www.petersons.com Roots and Radicals 10 5. The square root of 17,956 is exactly (A) (B) (C) (D) (E) 132 133 134 135 137 DIAGNOSTIC TEST Directions: Work out each problem. Circle the letter that appears before your answer. Answers are at the end of the chapter. 1. The sum of (A) (B) (C) (D) (E) 2. 87 73 3 5+3 2 29 3 33 45 is 75 and 12 is The difference between 125 and (A) (B) (C) (D) (E) 45 25 6. 2 52 10 9 x and 4 x is The square root of 139.24 is exactly (A) 1.18 (B) 11.8 (C) 118 (D) .118 (E) 1180 Find (A) (B) (C) (D) (E) x2 x2 + . 36 25 11x 30 9x 30 x 11 2x 11 61 x 30 3. The product of (A) (B)...
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This note was uploaded on 08/15/2010 for the course MATH a4d4 taught by Professor Colon during the Spring '10 term at Embry-Riddle FL/AZ.

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