Plzzz help me I’ve been needing help in this question

What is the length of the diagonal (d) in the solid below

420
450
460
480

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 do you determine if an ordered pair is a solution to a given equation?

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?