Jamie rented a canoe while she was on vacation. She paid a flat $85.00 plus $7.50 each day. Her total cost was $130.00. For how
2 answers:
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A
evaluate f(5) and f(2)
f(5) = 5m + b and f(2) = 2m + b, hence
f(5) - f(2) = 5m + b - 2m - b = 3m
the expression simplifies to
= 2 ( cross- multiply )
3m = 6 ( divide both sides by 3 )
m = 2 → A