What information relevant to calculating are do we have available for this triangle?

Well, since we are not given any graphics or additional information, I'll resort to listing four triangle area formulas:

1) triangle area = (1/2) * base * height

2) Heron's Formula  ("s" = semiperimeter, which is the sum of all 3 sides divided by two)

triangle area = square root [s * (s - side a) * (s - side b) * (s - side c)]

3) For 2 sides and the INCLUDED Angle:

Area = side 1 * sine (angle A) * side 2

Step-by-step explanation:

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: