Your local gas stations are having a price war. During the past 7 days they have lowered the price of regular gas by $.02 each day. Define a variable. Then write and solve an equation to find the total change in gas price. Show your work.
n-7x$0.2
n-$1.4
it changed $1.40
n-7x$0.02
n-$0.14
it changed $0.14
this is the correct answer.
n-7x$0.2 - no
n-7x$0.02