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Function: _error_handler
File: /home/mycocrkc/statisticsanswered.com/application/controllers/Questions.php
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Function: require_once
Suppose a tax rate increases from 5% to 10%. Which statement is not true
(a) The tax rate doubled.
(b) The tax rate increased by 200%.
(c) The tax rate increased by 5 percentage points.
(d) The tax rate increased by 100%.