The measures of two supplementary angles are (0.5x)° and (x + 30)°. Determine the value of x. (Type number only)

Can someone me with my hwplz(only the circled ones)

Formulate alisha has a number in mind. if she adds three to her number the result is less than five. use this information to write and solve an inequality about alisha's number. then graph the solution set.

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