Are g(x)=13x-13 and h(x)=1/13x-1 inverse functions

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

For the equations below which statement is true ? -2x=14 6x=-42

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