△ABC and △DEF are similar triangles.

Identify the graph of y = ln x + 1.

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.