What does the slope of the line represent and what does the y-intercept of this function represent? how do you get

Which of the following is the formula for the sequence graphed below

Which equation requires the division property of equality to be solved?

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?