Erin bought a $205 smart phone, but her total was $217.30. What percent sales tax did she pay?
1 answer:
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Answer:
f of x equals 7 times one eighth to the x power
Step-by-step explanation:
Given phrase,
function f of x equals 7 times one half to the 3 times x power,
By the power to power property of exponent,
That is,
= f of x equals 7 times one eighth to the x power