How many solutions does this equation have? -3z = -2z - 6

In which of the situations can information about tyler be represented by the expression r+3 when r represents information about ray? check all that apply.

Anyone know? will mark brainliest if correct

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?