Find the distance between (8,-2) and (-2,6)

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

What is the output, or dependent variable of quantity? 1: x 2: f(x) 3: y