If barbara used the washer for 3 hours and her brother returned it to the store 7 hours after she rented it how much does her br
other owe her
2 answers:
Answer:
a. $15.00
Step-by-step explanation:
okay so the complete question is
After a heavy rainstorm, Barbara’s dog left muddy paw prints all over her back patio. She decided to rent an electric pressure washer to clean up the mess. The piece wise function below shows the rental charges for the pressure washer, dependent upon how many hours she rents it. Due to high demand, you cannot rent the washer for more than 24 hours at a time. Barbara’s brother asked to use the washer and agreed to pay Barbara for any additional monies owed.
(See attached picture)
If Barbara used the washer for 3 hours and her brother returned it to the store 7 hours after she rented it, how much does her brother owe her?
$15.00
$41.00
$60.00
$61.00
Since Barb and her bro used it for 7 hours total, we'll be using the second function, or 26 = 5(h-4)
plug 7 in for h and solve and you'll get
41
subtract 26 (got that from the first function) from 41 and you'll get your answer:
$15.00
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There are many ways to do this depending on the property you have to use:
If you use the distributive property, you need to distribute 3/4 to -10 and 2/5. Distribute means you will multiply it so your resulting equation will be this:
Before you can add, you need to first make them like terms because you cannot add unlike fractions. Get the LCD and form your new equation:
Now you can just add them together to get:
and then simplify your fraction:
or - 
The whole fraction becomes negative because when you divide integers and of them is negative, the final answer will be negative.
If you use the distributive property, you need to distribute 3/4 to -10 and 2/5. Distribute means you will multiply it so your resulting equation will be this:
Before you can add, you need to first make them like terms because you cannot add unlike fractions. Get the LCD and form your new equation:
Now you can just add them together to get:
and then simplify your fraction:
The whole fraction becomes negative because when you divide integers and of them is negative, the final answer will be negative.
Answer:
Slope = -
Y-intercept = 4
Step-by-step explanation:
-> See attached
-> This equation is in slope-intercept form.
[] When we use y = mx + b, the m is the slope and the b is our y-intercept.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
