how do the average rates of change for the pair of functions compare over the given interval? f(x)= - 0.6x²…

how do the average rates of change for the pair of functions compare over the given interval? f(x)= - 0.6x² g(x)= - 1.2x² 3≤x≤7 the average rate of change of f(x) over 3≤x≤7 is. the average rate of change of g(x) over 3≤x≤7 is. the average rate of change of g(x) is times that of f(x). (simplify your answers. type integers or decimals.)

how do the average rates of change for the pair of functions compare over the given interval? f(x)= - 0.6x² g(x)= - 1.2x² 3≤x≤7 the average rate of change of f(x) over 3≤x≤7 is. the average rate of change of g(x) over 3≤x≤7 is. the average rate of change of g(x) is times that of f(x). (simplify your answers. type integers or decimals.)

Answer

Explanation:

Step1: Definir la fórmula de tasa de cambio promedio

La tasa de cambio promedio de una función $y = f(x)$ en el intervalo $[a,b]$ es $\frac{f(b)-f(a)}{b - a}$.

Step2: Calcular la tasa de cambio promedio de $f(x)$

Dado $f(x)=- 0.6x^{2}$, $a = 3$ y $b = 7$. $f(3)=-0.6\times3^{2}=-0.6\times9=-5.4$. $f(7)=-0.6\times7^{2}=-0.6\times49 = - 29.4$. La tasa de cambio promedio de $f(x)$ es $\frac{f(7)-f(3)}{7 - 3}=\frac{-29.4-(-5.4)}{4}=\frac{-29.4 + 5.4}{4}=\frac{-24}{4}=-6$.

Step3: Calcular la tasa de cambio promedio de $g(x)$

Dado $g(x)=-1.2x^{2}$, $a = 3$ y $b = 7$. $g(3)=-1.2\times3^{2}=-1.2\times9=-10.8$. $g(7)=-1.2\times7^{2}=-1.2\times49=-58.8$. La tasa de cambio promedio de $g(x)$ es $\frac{g(7)-g(3)}{7 - 3}=\frac{-58.8-(-10.8)}{4}=\frac{-58.8 + 10.8}{4}=\frac{-48}{4}=-12$.

Step4: Comparar las tasas de cambio

Para encontrar cuántas veces la tasa de cambio promedio de $g(x)$ es de la de $f(x)$, calculamos $\frac{-12}{-6}=2$.

Answer:

The average rate of change of $f(x)$ over $3\leq x\leq7$ is $-6$. The average rate of change of $g(x)$ over $3\leq x\leq7$ is $-12$. The average rate of change of $g(x)$ is $2$ times that of $f(x)$.