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r-ruslan [8.4K]
3 years ago
6

Please help me I need to submit this asap

Mathematics
1 answer:
frez [133]3 years ago
8 0

Answer:

D

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

\frac{f(b)-f(a)}{b-a}

Here { a, b ] = [ - 1, 2 ], thus

f(b) = 4 ← from (2, 4 )

f(a) = \frac{1}{2} ← from (- 1, \frac{1}{2} ) , thus

average rate of change = \frac{4-\frac{1}{2} }{2-(-1)} = \frac{\frac{7}{2} }{3} = \frac{7}{6} → D

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