amunnik04
17.12.2020 •
Mathematics
A 20-1b bag of mulch costs $3.80, and a 30-1b bag of the same type of mulch costs $4.80. Greg found the unit price, which is the
constant of proportionality between cost and weight, for each bag of mulch. What is the difference in the unit prices?
O A. $0.20 per pound
O B. $0.30 per pound
O c. $0.02 per pound
O D. $0.03 per pound
HURRRY PLSLSS I NEED
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Ответ:
The slope of the line that passes through two points is
(the difference in 'y') divided by (the difference in 'x').
The two points are: (3, -4) and (5, -7)
The difference in 'y' is . . . (-7) - (-4) = -3
The difference in 'x' is . . . (5) - (3) = 2
The slope of the line through those two points is (-3) / (2) .
That's the 3rd choice on the list.