Solve the problem. If necessary, round to the nearest tenth or as indicated. Tamara wants to buy a piece of ribbon that measures 455 cm. The price is $4.26 per meter. How much will Tamara have to pay? Round to the nearest cent.
A. $19.38
B. $17.27
C. $17.04
D. $9.69
Answer: A
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A. 25 B. 10 C. 5 D. 18
Convert the units using unit fractions.20 yd = 
ft
A. 240 B. 720 C. 60 D. 180
Use a product-to-sum identity to rewrite the expression.cos 34° cos 19°
A. 0.5(cos (15°) - cos(53°)) B. 0.5(sin (15°) + sin(53°)) C. 0.5(cos (15°) + cos(53°)) D. 0.5(sin(53°) - sin (15°))
The rate of vocabulary memorization of the average student in a certain foreign language course is given by 
, where t is the number of continuous hours of study, 
, and v is the number of words. About how many words would the average student memorize in 2 hours? Round
your answer to the nearest whole number of words. ? A. 36 words B. 38 words C. 40 words D. 41 words E. 43 words