Answer:It's A I think if not try B
Step-by-step explanation:
Answer:
B = 80
Step-by-step explanation:
y = 4x
y = 1/2x + 280
Substitute one equation into another.
4x = 1/2x + 280
Combine like terms
3.5x = 280
x = 80
The point of intersection is (2,-6).
Answer:
3x +2y -7
Step-by-step explanation:
The given expression can be simplified by combining like terms. Those are terms with the same variable. The commutative and associative properties of addition apply, as well as the distributive property.
(2x +3y -7) +(x -y) . . . . . given
= 2x +3y -7 +x -y . . . . . . eliminate (unneeded) parentheses
= (2x +x) +(3y -y) -7 . . . . group like terms
= (2+1)x +(3-1)y -7 . . . . . . combine coefficients of like terms (this is an application of the distributive property)
= 3x +2y -7
