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please can anyone help me
. A rental moving company charges a flat rate of $15 and an additional $0.50 per mile for moving services. Which linear function represents the total charge f for x miles?
1 . f(x) = 15x + 0.5
2. f(x) = 0.5x – 15
3. f(x) = 0.5x + 15
4. f(x) = 15x – 0.5