Combine the like terms to make a simpler expression: r+(−5r)

Can someone answer this question? : )

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?

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)