QUESTION IMAGE
Question
find the average rate of change of $f(x)=-2x^{2}-5x + 7$ over the interval $-5,5$. average rate of change = select choice -5 -50 -18 -68
Step1: Calcular \( f(-5) \)
Sustituir \( x = -5 \) en \( f(x) = -2x^{2}-5x + 7 \):
$$
LATEXBLOCK0
$$
Step2: Calcular \( f(5) \)
Sustituir \( x = 5 \) en \( f(x) = -2x^{2}-5x + 7 \):
$$
LATEXBLOCK1
$$
Step3: Aplicar la fórmula del cambio promedio
La fórmula del cambio promedio de una función \( y = f(x) \) en el intervalo \([a,b]\) es \( \frac{f(b)-f(a)}{b - a} \). Aquí \( a=-5 \), \( b = 5 \), \( f(a)=-18 \), \( f(b)=-68 \):
$$
LATEXBLOCK2
$$
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