O solve this system of equations by elimination, what operation could be used to eliminate the x-variable and find the value of y?

−6x − 4y = 2
−4x − 7y = 2
A) subtract 3 times the second equation from 2 times the first equation
B) subtract 2 times the second equation from 3 times the first equation
C) add 3 times the second equation to 2 times the first equation
D) add 2 times the second equation to 3 times the first equation

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:

what

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b

hard

step-by-step explanation: