The initial temperature of a cup of tea is 200ºf. the surrounding temperature is 70ºf, and the value of the constant k is 0.6. applying newton's cooling model, the temperature of the tea after 2 hours will be ºf

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

a - base

b - exponent

so,