Simplify and select the answer with the appropriate restrictions for the variables. (x+3)(x+7)/3x+21

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project

If a line is defined by the equation y = 5x + 2, what is the slope?

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|