-2w - 5w simplify the expression and combine like terms

Give all possible names for each angle shown.calculation tip: in angle abc, b is the vertex.

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each,and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent.how much did jame pay at the end?

How is working backward similar to solving an equation?