How to i rewrite 3a+6b=d in terms of b and d

Which system of linear inequalities is represented by the graph?

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Average acceleration: i have no idea how to do this.