Will give brainliest. edwin graphs the relationship of the gallons of milk he buys in terms of dollars. sam buys milk from a different shop. he writes an equation for the amount he spends on milk, p = 3.4g, where p is the cost and g is the gallons of milk bought. who buys milk at a lower rate, and what is the price? a) edwin buys milk at a lower rate, $3.40 per gallon. b) edwin buys milk at a lower rate, $3.50 per gallon. c) sam buys milk at a lower rate, $3.50 per gallon. d) sam buys milk at a lower rate, $3.40 per gallon.