Write an expression for: four times the quantity k plus 6.
1 answer:
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A)The formula for the average monthly cellular telephone bill in terms of the year will be A = 80.90(0.914)ⁿ⁻¹
B)The average monthly bill in 1993 willl be $ 61.77
<h3>What is the percentage?</h3>The quantity of anything is stated as though it were a fraction of a hundred. A fraction of 100 can be used to express the ratio.
The formula for the average monthly cellular telephone bill in terms of the year willl be,
A=P(R/100)ⁿ
A = 80.90(0.914)ⁿ⁻¹
The average monthly bill in 1993 is found as ;
n=4 for 1993
A=P(R/100)ⁿ
A = 80.90(0.914)³⁻¹
A=$ 61.77
Hence the formula for the average monthly cellular telephone bill in terms of the year will be A = 80.90(0.914)ⁿ⁻¹ and the average monthly bill in 1993 willl be $ 61.77.
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the root for which the graph of cross the x-axis i.e. value of y or f(x) = 0 is
.
<u>Step-by-step explanation:</u>
We have , f(x) = (x + 4) 6(x + 7)5 i.e.. We need to find root for which the graph of
cross the x-axis i.e. value of y or f(x) = 0. Let's solve this:
⇒
⇒
⇒
Which means either or ,
. That means the root for which the graph of
cross the x-axis i.e. value of y or f(x) = 0 is
or
. ∴ From given options , the root for which the graph of
cross the x-axis i.e. value of y or f(x) = 0 is
.