Answer: 8/3
Step-by-step explanation:
Given :
A carton of 12 eggs or a carton of 18 eggs was the better buy. A carton of 12 eggs cost $2.39, and a carton of 18 eggs cost $3.39. Unit price of the 12-egg carton = ($2.39)(12 eggs) = $28.68 per egg Unit price of the 18-egg carton = ($3.39)(18 eggs) = $61.02 per egg The 12-egg carton has the lower unit cost, so it is the better buy.
To Find :
What was her first error.
Solution :
Her first error is to find Unit price of egg in each carton.
To find, unit price we should divide total amount by number of units :
Unit price for carton of 12 eggs, $ (2.39)/12 = $0.199 .
Hence, this is the required solution.
Option 2 is your answer
Your numbers on the left are going across. Then the numbers on the top are going down
Answer:
Joe's Plumbing charges more per hour ($45) than Mark's Plumbing (S40)
Step-by-step explanation:
Let
t ------> the number of hours
J(t) ---->the total amount in dollars that Joe's Plumbing charges
M(t) ---->the total amount in dollars that Mark's Plumbing charges
we know that
The linear equation in slope form is equal to
where
m is the slope or rate of the linear equation
b is the y-intercept (initial value)
In this problem we have
<em>Joe's Plumbing</em>
The slope or rate is equal to
Mark<em>'s Plumbing</em>
The slope or rate is equal to
therefore
Joe's Plumbing charges more per hour ($45) than Mark's Plumbing (S40)
Answer:
9.2 seconds
Step-by-step explanation:
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