Hiii this geometry, please help!!

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 jamie pay at the end?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Find the zeros of each function. f(x) = x^2 + 5x - 6