What is the slope of any line parallel to line containing (-5,2)& (1,8)

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?