In a individuals all have an equal chance of being selected and all samples have an equal chance of being selected?

What is the range of the data below? .8090100

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?

If square root x = -7, then x= -49 true or false