Solve for x: 1/5 (5x + 12) = 18
how would i go about solving didn't understand the lesson too well and now i'm rather confused

Having a hard time understanding this question (see attachment).

Traffic on saturday, it took ms. torres 24 minutes to drive 20 miles from her home to her office. during friday's rush hour, it took 75 minutes to drive the same distance. a. what was ms. torres's average speed in miles per hour on saturday? b. what was her average speed in miles per hour on friday?

How many square centimeters of wrapping paper will be used to wrap the shoe box?