Linear, Quadratic, and Exponential Models: Interpreting Parameters in Linear and Exponential Models (CCSS.F-LE.5) Practice Test

A lab models bacteria count by $N(t)=200\cdot 2^t$ for $t$ hours after the start. The base is 2 and the initial count is 200.

You have $350 in a savings account and withdraw $20 each week. The balance is modeled by $S(t)=350-20t$ for $t\ge 0$ weeks, where the intercept is 350 and the slope is −20. Assume no deposits.