Which of the following set of ordered pairs represents a function?

Solve the x in the equation x^2+14x+17=-96

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 to find the exponential function y=ca^x, with points (1,2) and (2,1)