a club decides to sell t-shirts for $15 as a fundraiser. It costs $20 plus $9 per t-shirt to make the t-shirts. write and solve
2 answers:
Given
a club decides to sell t-shirts for $15 as a fundraiser.
It costs $20 plus $9 per t-shirt to make the t-shirts
sell in order to profit at least $150
Find out the number tshirts the club needs sell in order to profit at least $150.
To proof
let the number of t-shirts sell by the club = x
t- shirt selling cost = $15
t-shirt making cost = $20 + $9 per t-shirt
= 20 + 9x
than the equation becomes
solving the above equation
we get
15x -9x ≥ 150 +20
6x ≥ 170
x ≥ 28.3 (approx )
In order to make a profit of atleast $150 club need to sell 28 t-shirts.
Hence proved
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Answer:
10.67
Explanation:
The given series is a geometric series:
8 , 2 , 0.5 , ...... etc
The general formula of the geometric sequence is:
a1 , a1*r , a1*r² , ......
Comparing the general form with the given, we would find that:
a1 = 8
a1 * r = 2
Therefore:
8*r = 2
r = 2/8 = 0.25
We can double check using another term as follows:
a1 = 8
a1*r² = 0.5
8r² = 0.5
r² = 0.5/8 = 0.0625
r = √0.0625 = 0.25
Now, we will get the sum of the sequence as follows:
S =
= 
= 32/3 = 10.67
Hope this helps :)
10.67
Explanation:
The given series is a geometric series:
8 , 2 , 0.5 , ...... etc
The general formula of the geometric sequence is:
a1 , a1*r , a1*r² , ......
Comparing the general form with the given, we would find that:
a1 = 8
a1 * r = 2
Therefore:
8*r = 2
r = 2/8 = 0.25
We can double check using another term as follows:
a1 = 8
a1*r² = 0.5
8r² = 0.5
r² = 0.5/8 = 0.0625
r = √0.0625 = 0.25
Now, we will get the sum of the sequence as follows:
S =
Hope this helps :)