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Sagot :
Answer:
- The cost for using 22 HCF is $47.74
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Equation of line:
- y = mx + b, where m- slope, b- y-intercept
Given values can be interpreted as pairs of coordinates of the two points:
- (16, 39.04) and (44, 79.64)
Find the slope of the line:
- m = (79.64 - 39.04)/(44 - 16) = 40.6/28 = 1.45
Find the y-intercept, by substituting coordinates of one point:
- 39.04 = 1.45*16 + b
- 39.04 = 23.2 + b
- b = 39.04 - 23.2
- b = 15.84
The equation becomes:
- y = 1.45x + 15.84
Find the value of y when x = 22:
- y = 1.45*22 + 15.84 = 31.9 + 15.84 = 47.74
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