Shonali buys 300cm of wire that costs $2 per metre. how much does she pay for the wire?

You call the pizza store and find out that eachpizza has 12 slices. you expect 16 people tocome, and you estimate each person will eat 3slices. how many pizzas should you order

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

How is working backward similar to solving an equation?