Which unit rate is the lowest price per ounce? Please answer ASAP

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.

5(-9w) put expression in distributive property

In the diagram below, abc is congruent to dec what is the value of x