Answer: choice C, y = 0.014x+0.85
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Explanation:
Each column of the table represents an (x,y) pair of values
x = number of pages
y = cost
If we look at the first two columns, we see the two points (50,1.55) and (100,2.25). The x value is listed first. Let's compute the slope of the line through these two points
m = (y2-y1)/(x2-x1)
m = (2.25-1.55)/(100-50)
m = 0.7/50
m = 0.014
So far, we see the answer is between A,B or C as they have the slope of 0.014
Use this slope value, and one of the points -- say (x,y) = (50,1.55) -- to find the y intercept b
y = mx+b
y = 0.014x+b .... plug in the slope found earlier
1.55 = 0.014*50+b ... plug in the point (x,y) = (50,1.55)
1.55 = 0.7+b
1.55-0.7 = 0.7+b-0.7 ... subtract 0.7 from both sides
0.85 = b
b = 0.85
With m = 0.014 as the slope and b = 0.85 as the y intercept, we can say that y = mx+b turns into y = 0.014x+0.85. That narrows the answer down to choice C.
Step-by-step explanation:
........4x-y=11........
The average daily balance for the month was $84.21, and the finance charge for the month was $30.13.
<h3><u>Averages</u></h3>
Given that Sally's balance on her credit card is $75.00 on the first day of August, and she makes a payment of $18.00 on August 17 and a new purchase of $41.00 on August 29, and the annual interest rate is 21.25%, to determine what is Sally's average daily balance and finance charge for the month of August, the following calculation must be made:
- 75 x ((21.15/12 x 16) / 100) + 75 = A = 86.89
- 57 x ((21.15/12 x 13) / 100) + 57 = B = 70.06
- 98 x ((21.15/12 x 3) / 100) + 98 = C = 103.18
- (86.89 x 16 + 70.06 x 13 + 103.18 x 3) / 31 = X
- 84.21 = X
- 86.89 + 70.06 + 103.18 - 75 - 57 - 98 = Y
- 30.13 = Y
Therefore, the average daily balance for the month was $84.21, and the finance charge for the month was $30.13.
Learn more about averages in brainly.com/question/23455102
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Answer:
Whats the question so that I can help?
Step-by-step explanation:
57.4 because u add all the side up and u get a answer
