Examine parallelogram abcd. angles a and d have measures of x and (x+30), respectively.
What is the value of x? Do not include the degree symbol.

Solve the system of equations y= 3/2 - 1, -x+ y =-3

What is the value for this expression? 2e-5

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?