If you owned a gas station in southern california and an earthquake occurred that cut off the supply of gasoline you could sell for four to six weeks, would you raise the prices?

answer:

oh yes i would

explanation:

x=3

step-by-step explanation:

this is really simple i saw that there was only one term (5x) and thought if that was 15 what would i have to multiply everything else to get it there? well if 5x became 15 then x would have to be 3 so plug the 3 in the x for the other equations and you get 15 for the other ones. so there you go. : )

u = 30

continuing your method

= +

subtract from both sides

= - thus

= -

= ⇒ u = 30