Super simple, just don't know if I am right or not.

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

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?