Shelley drove from new haven, connecticut, to new york city in 90 minutes. which equation relates the distance she traveled to her speed?

In the place where you copied the question from, were there also some choices
to select the answer from ?  Did you inadvertently neglect to include them with the
question, or was that intentional, leaving us to pull an equation out of thin air ?
Alternatively ... and incredibly ... did you just not realize that the list of equations
printed right there next to the question or under it had anything to do with it ?

If Shelley completed a drive in 90 minutes, then

       The distance = (90) x (her average speed on the trip, in miles per minute)
or
                            = (1.5) x (her average speed on the trip, in miles per hour) .

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

the value of x is equal to 0.