Use the vertex form,
y=a(x-h)^2+ky=a(x+7)^2+45
<span>Use the y-intercept to solve for a</span>-200=a(0+7)^2+45
49a+45=-20049a=-245a=-5
Answer:
a) $420 b) $399
Step-by-step explanation:
a) $600 = 100%
$60 = 10%
$60 times 3 gives 30% = $180
$600 - $180 = $420
b) $420 = 100%
$42 = 10%
$21 = 5%
this means, they profitted by $21.
so $420 - $21 = $399
therefore, $399 is the cost price
Answer:
8=729/3
Step-by-step explanation:
The exponent is not suppost to be there so middle ones are wrong and the first one is looking for the middle of the number that is even
Answer:
$160
Step-by-step explanation:
In the monthly payment option she would pay $80 per month, therefore in a year (12 months) she would pay:
$80*12 = $960
We can see that this amount is greater than the $800 she would pay in the lump sum payment option.
The money she would save is:
$960 - $800 = $160
She would save<u> $160 yearly</u> with the lump sum payment option.
144 I believe
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veronica howard
