Q1Chapter 1.2EasyMark for reviewABCAP PrecalculusThe function fff is given by f(x)=x2+3xf(x)=x^{2}+3xf(x)=x2+3x. What is the average rate of change of fff over the interval [−4,−1][-4,-1][−4,−1]?A222B−2-2−2C−6-6−6D−12-\dfrac{1}{2}−21Check answer