Posted by Daniel on .
suppose you earn 5.50/h at a bakery. From your first paycheck you discover that $1.15/h is withheld for taxes and benefits. you work x hours in a five day week and you spend $3.75 each day on lunch.
Write an equationfor your earnings for a 5 day week after taxes and expenses.
In this situation what does the slope represent?y inercept?
How many hours must you work to earn $120 after taxes and expenses?
I will be happy to critique your work on this.
So your net salary is 5.50  1.15 /h
= 4.35/h
you work x hours in a 5 day week
4.35x  5*3.75
4.35x  18.75 = earnings per 5 day week
the slope, (4.35) shows your hourly wage after tax.
The y intercept (18.75) represents your expenses per week.
To answer the last question I will assume you are asking how many hours in 1 week must you work to earn $120.
Substitute 120 as the answer to the equation
4.35x18.75 = 120
4.35x = 138.75
x = 138.75/4.35
x = 31.89
x = 32 as you don't get paid . for 0.89 of 1 hour

math linear equations 
sam,
where did u get the 4.35 from ?