question the functions f(x), g(x), and h(x) are shown below. select the option that represents the ordering…

question the functions f(x), g(x), and h(x) are shown below. select the option that represents the ordering of the functions according to their average rates of change on the interval 3 ≤ x ≤ 4 goes from least to greatest. answer f(x),g(x),h(x) h(x),g(x),f(x) h(x),f(x),g(x) g(x),h(x),f(x) f(x),h(x),g(x) g(x),f(x),h(x)
Answer
Explanation:
Step1: Recall average - rate - of - change formula
The average rate of change of a function $y = k(x)$ on the interval $a\leq x\leq b$ is $\frac{k(b)-k(a)}{b - a}$. Here, $a = 3$ and $b = 4$.
Step2: Calculate average rate of change of $f(x)$ from the graph
From the graph of $f(x)$, when $x = 3$, $f(3)\approx - 2$ and when $x = 4$, $f(4)\approx4$. The average rate of change of $f(x)$ is $\frac{f(4)-f(3)}{4 - 3}=\frac{4-(-2)}{1}=6$.
Step3: Calculate average rate of change of $g(x)$ from the table
From the table of $g(x)$, $g(3)=9$ and $g(4)=6$. The average rate of change of $g(x)$ is $\frac{g(4)-g(3)}{4 - 3}=\frac{6 - 9}{1}=-3$.
Step4: Calculate average rate of change of $h(x)$ using the formula
Given $h(x)=-x^{2}+3x + 14$. Then $h(3)=-3^{2}+3\times3 + 14=14$ and $h(4)=-4^{2}+3\times4 + 14=-16 + 12+14 = 10$. The average rate of change of $h(x)$ is $\frac{h(4)-h(3)}{4 - 3}=\frac{10 - 14}{1}=-4$.
Step5: Order the average rates of change
Comparing the average rates of change: $-4<-3<6$, so $h(x),g(x),f(x)$.
Answer:
$h(x),g(x),f(x)$