What is the approximate percent change in a temperature that went down from 120 degrees to 100 degrees?
the percent change was 17%.
the percent change was 20%.
the percent change was 80%.
the percent change was 120%.

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).