Question is in description it is algebra

Question

Jen, a biologist, is growing bacterial cultures at different temperatures as part of her research. The number of cells in the culture growing at 25°C is given by the polynomial t2 + 4t + 4, where t is the time elapsed in minutes. The number of cells in the second culture growing at 35°C is modeled by the polynomial t2 + 4. She needs to measure the success of the 25°C culture over the 35°C culture. Find the polynomial representing how many more cells are in the 25°C culture for time t. How many more cells are there after 15 minutes?

Answer 1

@25° the number of cells is given by t^2 + 4t +4. @35° the number of cells is t^2 + 4. The difference is (t^2 + 4t + 4) - (t^2 +4) = 4t.

So in 15 minutes, the 25° experiemnt will tield 4*15 = 60 more cells.