Susan mailed y letters in January. She mailed 3 times as many letters in February. In march she mailed 10 letters more than half of what she mailed in January February together. If a letter cost $0.37 to mail, how much money did she spend mailing letters in march?

If a =6, what is the value of 2a(3b + 5c)?

Ineed with math stuff it involves graphs

Maci and i are making a small kite. two sides are 10". two sides are 5". the shorter diagonal is 6". round all your answers to the nearest tenth. 1. what is the distance from the peak of the kite to the intersection of the diagonals? 2. what is the distance from intersection of the diagonals to the top of the tail? 3. what is the length of the longer diagonal?