Which statements are true about statistics? Check all that apply. They help describe sets of data. They include the mean, median, range, and interquartile range. They include only mean and median. Measures of center and measures of spread are examples of statistics. They can work only with one set of data. PLEASE ASAP

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:

its 8

step-by-step explanation:

the function makes a strait line horizontally with no x intercept but a y intercept at 9.