A survey of 222 SPC students was taken at registration. Of those surveyed: 72 students had signed up for a Math course
53 students had signed up for a Language Arts course
19 students had signed up for both a Math and Language Arts course
10 students had signed up for both a Math and Humanities course
9 students had signed up for both a Language Arts and Humanities course
1 students had signed up for all three courses
16 students did not sign up for any of these classes
How many students signed up for only Humanities (of these three)?

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:

i think is 3 and 6. this took me 10 min to think.hope to and hope that my answer is brainliest.(follow me )

80

step-by-step explanation: