The half-life of P33 (phosphorus) is approximately 25 days and its decay is approximated by the model Q(1) = Qoe-0.02731 where t is time in days, Q(t) is the quantity at time t, and Q, is the initial quantity. What percentage of a given amount remains after 43 days? [A] 50% [B] 32.9% [C] 30.4% [D] 0.3%

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.