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| rev | Admin | (Created page with "Payments are made to an account at a continuous rate of <math>8k + tk</math>, where <math>0 \leq t \leq 10.</math> Interest is credited at a force of interest <math> \delta_t = \frac{1}{8 + t}.</math> After time 10, the account is worth 20,000. Calculate k. <ul class="mw-excansopts"><li>111</li><li>116</li><li>121</li><li>126</li><li>131</li></ul> {{soacopyright | 2023 }}") | Nov 17'23 at 22:14 | +379 |