A merchant paid $3 each for golfing hats that he sold for $4 each. He therefore earned a
2 answers:
Answer:
Option E. None of these.
Step-by-step explanation:
A merchant paid $3 each for golfing hats and sold for $4 each. He earned a gross profit of $1 per hat.
We have to calculate the percent of increase in cost price Or percentage profit.
Percentage profit =
=
= %
Which not in any option.
Therefore, Option E. None of these is the answer.
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Answer: The first and last options are correct
Explanation:
The recursive formula is written in terms of the previous term of the sequence. From the information given,
the Arnold's are going to save a nickel on the first day of the month and double the amount each day of the month. Thus, the recursive formula would be
where
an - 1 defines a previous term
To write the explicit formula, we would apply the formula for finding the nth term of an arithmetic sequence which is expressed as
An = ar^(n - 1)
where
a is the first term of the sequence
n is the number of terms
r is the common ratio between consecutive terms
Thus,
r = 2 because the amount is doubling each day
n = number of days
a = value of 1 nickel = $0.05
By substituting these values into the formula,
the explicit formula is
A(n) = 0.05(2)^n - 1