Meghan went on vacation and sent 15 friends either a letter or a postcard. The postcards cost $0.35 to send and the letters cost $0.49 to send. Meghan spent $6.23 total on the postage for the postcards and letters. How many letters are sent? How many postcards are sent

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)