Your local gas stations are having a price war. During the past 7 days they have lowered the price of regular gas by $0.02 each day. Define a varible. Then write and solve an equation. To find the total change in gas price. Show your work. PLEASE HELP!!!! WILL GIVE MEDAL :)

Question

anonymous · Answer

Pick a variable you want for your regular gas price, I'll use x. and then a variable for the amount of days, i'll use b.
x-0.02(b)

anonymous · Answer

Sooo.... 
??

anonymous · Answer

I don't know what your gas prices are there, so just pick one and put it in for x

anonymous · Answer

Okay. So X=the gas price Before they stared to decrese the price?

anonymous · Answer

yes

anonymous · Answer

Okay Next step?

anonymous · Answer

So your equation right now is x-0.02(days)
since the question says over 7 days, put 7 into the equation.
x-0.02(7)
then you just need to pick to a gas price and put it in for x.

anonymous · Answer

soo. $4.10-0.02(7) Right?

anonymous · Answer

yes, then you just need to solve it for your answer

anonymous · Answer

Okay Thank You :)