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adell [148]
2 years ago
10

Mario is teaching himself to play guitar. Let x represent the number of days that have passed. Let y represent the number of min

utes practiced. The following equation describes the amount of time that Mario practices: y=85- 5x After how many days will Mario only be practicing for 40 minutes?
Mathematics
1 answer:
Svetradugi [14.3K]2 years ago
4 0

Answer:

9 days

Step-by-step explanation:

Y= minutes practiced

X= days

Mario practiced 40 minutes So Y= 40

40= 85-5x

40(-85)=85 (-85) -5x

-45=-5x

-45/(-5)= -5x/(-5)

9=x

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During a sale, a store offered a 15% discount on a TV that originally sold for $900. After the sale, the discounted price of the
iVinArrow [24]
<h3>Answer:   98%</h3>

==================================================

Explanation:

The customer saves 15%, but still pays the remaining 85%. The two percentages add to 100%.

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---------

Then after the sale, the price is marked up by 15%

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