Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Author: HOLT MCDOUGAL
Publisher: HOLT MCDOUGAL
Approximately 430 000 birds were killed by wind turbines in a given country. It is estimated that this number will increase to 910 000 per year in ten years. What would the percent increase be?
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A tabletop is semicircular when its three congruent drop-leaves are used. By how much has the tables area increased when the drop leaves shaded area increased. Give the answer to the nearest whole percent.
A manufacturer estimates that 15,500 pieces per day could be produced with the installation of new machinery. The machines now used produce 11,000 pieces per day. What percent increase in production would be gained by replacing the present machinery with new machinery? Round the answer to the nearest whole percent.
What is the total effect on the economy of a government tax rebate of $1,000 to each household in order to stimulate the economy if each household will spend 90% of the rebate in goods and services?
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