When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i

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?

What is the value of f(x) = 2.2 for f(-2)?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14