The function f(x) = 3.45x + 12 relates how much Catherine pays for electricity service, f(x), to the number of Units of power, x
, she uses in a month. What is the value and meaning of f(2)?
$30.09; this is the amount Catherine pays for 2 units of power in 1 month.
$30.09; this is the amount Catherine pays for 2 units of power in 12 months.
$18.90; this is the amount Catherine pays for 2 units of power in 1 month.
$18.90; this is the amount Catherine pays for 2 units of power in 12 months.
1 answer:
We have that
<span>f(x) = 3.45x + 12
substitute for x=2
f(2)=3.45*2+12-------> f(2)=$18.90/month
$18.90 is the amount, that </span><span>Catherine pays for 2 units of power in 1 month
</span>
therefore
the answer is the option
<span>$18.90; this is the amount Catherine pays for 2 units of power in 1 month.</span>
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