Can some one please help me

solve: 6(x+4) = 30

Two lines parallel to the same plane are parallel to eachother

The graph represents f(x)=[x]+3. what is f(-2.2)?

Judy garland electronics operate on a net-profile rate of 20% on its printer cables. if the markup is $8.95 and the overhead is $4.31,find the net profit and the selling price? use the net-profit rate formula to solve this problem.