X=5 becuase if 7*3=21 then x*3=15 and 5 times 3 = 15
So the answer is 12
The number of hotdogs that must be sold to earn $170 is 70
What is the formula for total earnings?
The total earnings can be determined as the price per hotdog multiplied by the number of hotdogs sold, which is as shown below:
total earnings=price per hotdog*number of hotdogs
total earnings(initially)=$140
price per hotdog=P
number of hotdogs=56
$140=P*56
P=4140/56
P=$2.50
Now, we need to determine the number of hotdogs required to earn $175
$175=$2.50*X
X=$175/$2.50
X=$70
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<span>27 hundredths + 7 hundredths
= 34 hundredths
= 0.034</span>
I like point point form because it doesn't fail in the no slope case. The line through (a,b) and (c,d) is
(c-a)(y-b) = (d-b)(x-a)
Point slope form is almost the same,

1. (a,b)=(4,0),(c,d)=(-2,1)
y - 0 = (1 - 0)/(-2 - 4) (x - 4)
Answer: y = (-1/6)(x-4)
2.
y - -2 = (3 - -2)/(5 - -3) (x - -3)
Answer: y + 2 = (5/8) (x+3)
3.
y - 1 = (4 - 1)/(3 - -5) (x - -5)
Answer: y - 1 = (3/8) (x+5)
First let's convert 7.5% into a decimal by doing Beyoncé on it and move the decimal two places to the left.

Now let's multiply the cost of the DVD by the converted percent,

Now let's add the above number to the original price, remember, $2 is not exact.

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I hope that helps you out!!
Any more questions, please feel free to ask me and I will gladly help you out!!
~Zoey