Swayk8505
12.12.2020 •
Mathematics
You want to buy an MP3 player. Your Aunt paid you $20 to mow her lawn and you earn $5 each week
1. Write an equation in Slope-Intercept form that represents y total amount saved and
x is number of weeks
y=125x+5
y=20x+125
y=5x+20
2. Interpret the y-intercept
$5 the amount you start with before mowing lawns
$20 the amount you saved mowing your aunt's lawn
$125 the amount you need to earn
3. If the MP3 player costs $125, how many weeks until you can afford to buy it?
21 weeks
105 weeks
25 weeks
Solved
Show answers
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Ответ:
1. y = 5x + 20
2. $20 the amount you saved mowing your aunt's lawn.
3. 21 weeks
Step-by-step explanation:
1. 5 is the slope because it is the rate. 20 is the y-intercept because that is how much you already have.
2. 20 because that is how much you already have.
3. Since you already have $20, you need to subtract 125 by 20 to get 105. Then you divide 105 by 5 to get 21 weeks.
Ответ:
Use distributive property: a(b + c + d) = ab + ac + ad