Before a sale, an item’s price was $38.00; during the sale, it was 15% off. What was the sale price?
1 answer:
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Answer:
D
Step-by-step explanation:
The average rate of change of f(x) in the closed interval [ a, b ] is
Here { a, b ] = [ - 1, 2 ], thus
f(b) = 4 ← from (2, 4 )
f(a) = ← from (- 1,
) , thus
average rate of change = =
=
→ D