If you flip a coin twice what's the probability that tails comes up both times

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

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Write an equation for the function that includes the points (1,4/5) and (2,2/3)