SO... Free points if you had me!

I don't really care how many friends I have on here, but I want to see if I can get 20 more in the next 2 hours.

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

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

Consider the graph of the exponential function y=3(2)×