Answer:
y = 0.02x
$0.14
Explanation:
Let
x = number of days the station was lowering the price of the gas
y = total change in gas price (after x days)
Each day the station lowered the price by $0.02, then after x days the price was lowered by $0.02x. Thus,
y = 0.02x
After 7 days the total change in gas price is
