Mathew reads equal numbers of pages of a book every week. The graph shows the number of pages of the book left to read, y, after
x weeks:
Which equation best models the relationship between x and y? (1 point)
A. y = −30x + 150
B. y = −5x + 30
C. y = −30x + 210
D. y = −5x + 150
Which equation best models the relationship between x and y? (1 point)
A. y = −30x + 150
B. y = −5x + 30
C. y = −30x + 210
D. y = −5x + 150
2 answers:
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To solve this, you need to isolate/get the variable "c" by itself in the equation:
4c + 8c = -55 + 3c You can first combine like terms (4c and 8c)
12c = -55 + 3c Subtract 3c on both sides
9c = -55 Divide 9 on both sides