Calculate the total area of these irregular shapes by fars & A1 8 and what pls help me AZ 10 10

How to do this , and can some one explain

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.