Question

A hot chocolate is sitting on Ms. Smith's desk, cooling. It cools according to the function T = 70.80)^x+ 20, where x is time in minutes and T is the temperature in degrees.a.) What is the temperature of the hot chocolate after 5 minutes? Round your answer to the nearest degree.b.) What value represents the y-intercept? Why?ok

Answer 1

b) 20. because according to the equation of a quadratic function. Ax^2 + Bx + C, where C is the y - intercept, in this eq, this walue corresponds to 20.

a) T = 70(.80)^5 + 20 = 43°